Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Ct, the OB/Dipole sub is a completely different animal than any sealed or ported sub. If you want a plug & play Rythmik sub, you'll need to go with the F15HP (or the smaller E15HP; same amp and woofer, just a slightly smaller cabinet). The OB/Dipole is available only as a kit (a plate amp and two 12" woofers), the W-or H-frame the woofers are installed in needing to be custom built. But you could have the frame(s) built for you locally, from the diagrams on the GR Research site. The GR Research Forum on AudioCircle is where you can find all the discussion of the OB/Dipole sub, not on the Rythmik AVS Forum.

The back-and-forth with Rythmik you've been having has been with Brian's right hand man Enrico. You can see his set-up, including sub locations, in his profile.

Your finding of subs being "slower" than your Quads is of course very common amongst not just Quad owners, but all planar owners, especially those of electrostatics. The seeming slowness, or lack of speed, of subs comes not from their inability to follow the steep front edge of a transient, but in their inability to "stop" when the signal does, referred to as "overshoot". Rythmiks in contrast "stop on a dime" as the old expression goes. Another reason is the relatively high moving mass of a lot of subwoofer cones, the mass storing energy. Mass is often added to woofer cones to lower their resonant frequency, but not without a penalty---the added mass and stored energy decreases the driver's "inter-transient silence", resulting in a less transparent sound. Brian Ding has a patented Direct Servo Feedback design in his plate amps and woofers, and it makes for a very clean, quick, transparent sound from the custom-made 8, 12, and 15 inch drivers.

The OB/Dipole sub I thought would be of particular interest to you Ct. It is an even better match with both your Quad and Eminent Technology loudspeakers than a regular Rythmik. The sub includes the DSF design, but the Dipole design and configuration gives it several advantages over a sealed or ported sub for use with planar speakers. First, it has the same figure-of-8 radiation pattern as planar loudspeakers, with a null at each side, so the sub can be placed side-by-side with the planar (allowing the use of a higher x/o frequency, for instance the 180Hz of the ET LFT-8b). Secondly, the fall-off of output with increasing distance from a speaker is less with planars than non-planars (including subs); with a Dipole sub, the balance between it and any planar loudspeaker remains constant, no matter the listening distance. That is NOT true of a planar loudspeaker with a non-planar sub, the balance between those two varying according to listening distance.

As to locating subs nearfield to reduce possible distortion, consider this: The limiting factor in a hybrid loudspeaker/sub pairing will be the maximum output of your loudspeakers, not the sub. When your Quads have reached their maximum SPL, the subs will still be coasting! The choice of sub location can therefore be determined from other considerations, it's seamless integration with the loudspeakers being the priority, I presume. Since you can't hear the Gr Research/Rythmik OB/Dipole Sub before purchase, I highly recommend reading all about it on the GR AudioCircle Forum. It's VERY special!

bdp24 November 04, 2015 22:36

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24

Bdp - did you see my previous post ?

Re: Room B - Quad 57 - Music Reference RM10 + Sub.

The arrows in the picture point to all the spots where sub/s have gone in the past.
I was hoping for some fun & guesses on which spot you guys thought worked best.
Well its location 12. Nearfield. Spot 11 works ok too. But above on the main floor close to spot 11 is my wife's couch for watching TV.
This is not good. Trust me on this one.

Bdp24 Did you email GR Research, or Rythmik?
I emailed Rhythmik with my requirements including the same picture with the arrows.
It lead to some back and forth dialogue.


**********************************************

Chris,

We have a lot of customers with Quad 57’s and Magnepan speakers as well. Our sealed subwoofer are good match for planar speakers in general. Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job. If your room is less than 3500 cu ft than a pair of F12s would be OK. If your room is bigger then a pair of E15HPs or F15HPs will be the way to go.

Best Regards,
Rythmik Audio - Tech Support --------------------------------------------------

"ME"
thanks for your reply.

"Depending on the size of your room, a pair of F12 or pair of F15HPs would do the job."

22 ft wide - 18 deep but a room behind where I am standing is another 13 x 24 if door left open. 8 ft ceilings.
In using one large sub as an experiment the red arrow represents the best placement with 57's.
How would your subs factor in. Based on your experience which arrows would represent good placement ?
Is this enough info to give me an opinion.

Date: Mon, 2 Nov 2015 10:46:29 -0600
Subject: Re: Quad 57 - wayne picquet rebuilds

Chris,

In a room that size you have to go with a pair of F15HPs. About the placement, it’s really hard to say what’s the best place to put the subwoofers because every room is different. You have to try different locations, take measurement or do a subwoofer crawl until you find the best location for the subwoofer(s). Usually front wall close to a corner helps with extension and output but it’s not the rule all the time or for every room.

Rythmik Audio – Tech Support

ME -

for a two channel only Audio room, have you ever used a near field placement beside / behind the listening couch ? Chris

Chris,

I have my pair of F12SEs near field, one on each side of my couch. Of course, my room is only 2700 cu ft.

Best Regards,

Rythmik Audio - Tech Support
ME

interesting thanks.

Would you agree then for two channel - if you want the best bass at the listening couch that the best placement is nearfield?
This allows for the lowest volume setting on the sub. The sub is never stressed.
Chris


Chris,

Like I said before placement is different for every room. In my room near field is better and also I don’t have many placement options. You have to try different locations until you find the most appropriated for your room. But usually near field placement works in most rooms.

Rythmik Audio - Tech Support*****************************************************

That's how the discussion went.
fwiw - Just One F15HP that Rhythmic mentions in the email trail starts at $1200 us.(from website)


Bdp24 - The OB Sub can be used up to around 300Hz, so a stereo pair is the norm. Bdp

I have tried a conventional stereo pair of subs (borrowed) in line / close to the Quad 57's in room B.

My observations

1) The Quad 57 bass is too fast for them.
2) Inline or close to the Quads also forces you to use higher setting on the subs, which ends up clouding the Quad midrange.

Right now

In Room B - Quad 57's with the Music Reference RM10 and that one conventional sub in nearfield at position 12.
The previous compression of sound that I talked about on this thread in Room B with the quads has been fixed.
I am able to achieve 100 db peaks if I want. I listen around 80-85 db plus peaks. The room is filled with sound due to the positioning of the quads.
So thinking of bringing in a pair and using both in nearfield.

Bdp24 - Rythmik lists the OB Sub kit in their product listings
I have many tools, and as a cottage owner I do a lot of DIY carpentry. My problem as confirmed by my wife. I am good at making stuff to about 90% completion. Meaning it will work and not fall down. But I am terrible at finishing touches. I usually get on with the next project on the list. I still have not put in the base mouldings for my Room B yet.

So...

Prefer a plug and play approach - finished product - and we unfortunately absolutely need to consider today the 30 point difference in our dollars :^(

ct0517 November 04, 2015 13:24