Description

Hello all,

My involvement in audio has been an evolving journey for many years now, but about six years ago, I decided a return to Tannoy speakers was something I had to do. I sold my Dynaudio Contour 5.4's, and purchased some HPD 315 drivers and crossovers on Ebay UK.

I had enclosures built in Pennsylvania by Frank Wyatt, of 1 7/8" net MDF (an inner 3/4" laminated to an outer 1 1/8" layer), with a Sapele Pommelle veneer. They are 150 liter bass-reflex, and weigh 192 lbs. each; sans drivers and crossovers.

I built outboard crossovers using Mundorf SIO caps, 12 gauge Alpha core inductors, and Dueland resistors, with silver solid core 14 gauge hookup wire.

I like them so much, they are the speakers I will have till I leave this earth.

After several years with a VPI Scout Signature, I wanted to venture into the idler wheel turntable world, so again on Ebay UK, I bought my Garrard 401, and did a DIY restoration on it. Frank Wyatt built a plinth for me, which I later modified extensively with Purpleheart side pieces (keeping the original 3/8" thick Bubinga center section), and milled Purpleheart edging on the top edges, and framing the Garrard chassis.

I then installed the Dynavector 501 arm (so nice to not have the VPI wobble!). Several cartridges are available in my collection, two Actutex (LPM 415, LPM 320), the Soundsmith retipped Dynavector XX2MKII, Zu Denon 103R with ESCCO white sapphire cantilever and Paratrace stylus mods, which is my favorite by far.

I bought a used Modwright SWP 9.0 SE phono stage, put NOS tubes in it, and installed an upgraded power supply provided by Dan Wright. I feel no compulsion to change to a different phono stage.

I wanted to try a tube line stage, so I sold my much-loved Sonic Euphoria passive, bought a Transcendent Sound Grounded Grid kit, in which I used NOS Amperex 12AU7 tubes, Clarity Caps output caps, Goldpoint stepped attenuator and switching, mil-spec silver hookup wire, and Bent Audio remote volume control. This is an amazing sounding line stage, I see no need to change.

Next came the Assemblage Audio SET 300B, which I sent to Chris Johnson for upgrades, caps and resistors, using Kiwame film resistors, Jupiter Paper Beeswax caps, and Nichicon caps. With the EML XLS 300B tubes the Tannoys sound lush, detailed, and very much like live music, especially well recorded Jazz LPs.

Lastly, some would say I devolved, but to have a quality backup in case of tube failure, and to save hours on the 300B output tubes, I decided to give Class D Audio a try. I bought a 125 Wpc CDA 254 kit a try, and really enjoyed it. I installed an additional amp module in it, running in bridged mono mode, it bumps the output up to 500 Wpc, which snaps the Tannoys to attention, and they sound excellent.

My old five channel amp gave out, so I built another CDA 254 class D amp, with an added module, and I was able to convert it to a three channel amp, with 125 wpc for the surrounds, and 500 watts for the center channel. All in all, a very cost effective set of amplifiers that are every bit as good as some of the higher priced amps I've used over the years.

At this point, at my age ( I turned 70 in February), I am happy to stand pat with what I have, I am enjoying the best sound I've ever had the pleasure of listening to at home.

As of 9/2016, I've completed additional sanding/polishing of the enclosures for my Tannoy HPD 315 drivers. This time, I got it right. Up next, a redo of the Garrard 401 plinth.

Refinishing of the plinth for the Garrard 401 has been completed. Removed face and top pieces, made replacement 1" thick Purpleheart face with inlay, all new top pieces, and new arm board from Purpleheart and Australian Mallee Burl.

Added photos of redone plinth.

Regards, and enjoy,
Dan         

More turntable photos added Mar, 2017 

Added new photos 11/12/2018

Added SET 845 Audio Renaissance 845 integrated amp, just picked up on 4/20. Makes my Tannoys sound the best they ever have.

Added RCA 5693 Red Metal tubes in the SET 845 amp, made for a nice improvement in SQ.

Regards,
Dan

08/09/2019

Added Benchmark DAC 1 Pre, my digital front end sounds very much improved with this DAC. I know there are better ones available, but not in my price range. May be the best $500 purchase yet. I also discovered how much I was missing with a Musical Fidelity X-CAN driving my Sennheiser HD 600's, they sound amazing, who knew how much I was missing? (Not me!)

Regards,
Dan

09/23/2019

Added what is the best line stage I've ever had, the Modwright SWL 9.0. This piece has completed the quest to attain what is my ultimate goal in my system's sound quality. There is now a new liquidity, and completeness to the sound my system never had before. As this category says, "Done For Now", but maybe should be "Done Forever".

Regards,
Dan

04/13/2020

Upgraded surround speaker with very nice Andrew Jones designed Pioneer x-Z9 monitors. Concentric midrange/tweeter with a bass driver, built by KEF. Sound and look beautiful. 
12/04/2019
Added new photos of turntable with red Albert King LP

May 8, 2020

Replaced my old Kef Reference 100 center channel speaker with new KEF Q 650c center channel speaker. This is a very good upgrade in multi-channel music listening, and home theater as well.

June 8, 2020

Just added newly built 3C24 amp, built for me by Paul Birkeland  of Bottlehead. It has the refinement like an SET 300B, but the power response similar to the SET 845 amp. Sounds beautiful, too.

Regards,
Dan

September 12, 2020

Installed new Audio Technica AT440Mlb moving magnet cartridge. Always wanted to know what they may sound like, so I bought this one on Ebay. I'm really enjoying the sound of this rather inexpensive cartridge. Makes me want more.

Sepember 23, 2020

I added an Audio Technica AT ART-9 moving coil cartridge.

It's already my favorite cartridge, with only two hours on it.

Regards,

Dan

06/05/21

Gratefully added Townshend Audio Seismic Podiums under my heavy Tannoy speakers. Effect was immediate and transformative. Made a very good speaker system a great one.

08/17/2021

Added Class D Audio Gallium Nitride amplifier from Class D Audio. It sounds great.

11/01/21

In the process of adding a Herron Audio VTSP 3A/360 six tube preamplifier to the system, scheduled to arrive Friday the fifth. If it sounds as good as it looks, it will be a game-changer.

Regards,
Dan

07/06/22

Added Benchmark DAC 3 DX  
Nice improvement.

2/12/23

Added Herron VTPH-2 Phono Stage 
It's a keeper!

04/23
Hypex UcD 400 Stereo amp, built from kit. Superb sounding amp!

07/02/23

Paul Birkeland changed amp to use 812 output tubes after having some problems with the 3C24 ouput tubes.
 Amp sounds even better now, glad to have it back and even better, thanks to Paul.
The 812 amplifier is now the best sounding amp I have ever heard.
Paul Birkeland should take a bow!
Read more...

Room Details

Dimensions: 34’ × 16’  X large
Ceiling: 11’


Components Toggle details

    • Arcam AV 9 Pre-amp Processor
    Just added to replace defunct Primare SP 31. Excellent, so far.
    • Benchmark Media Systems DAC 3 DX
    Just installed this DAC 3 DX which I bought off US Audiomart. It's sounds great just out of the box, best my digital front end has sounded yet. I'm very happy with this DAC, and now I understand what all the fuss was about. I'm sold.
    • Oppo UDP 203 with Linear Power Supply
    Bought this after my Arcam DV 139 died. Installed a new Linear Power Supply, back to enjoying my multi-channel hi-res music again.
    • Esoteric DV 60 Universal Player
    Universal player, XLR, HDMI connections, multi-channel capability.
    • Herron Audio VTSP-3A (rev02) 360 Line Stage
    VTSP 3A/360 Line Stage

    Exceptional sounding phono stage. It mates very well with my Herron line stage.
    • Herron Audio VTPH-2 Vacuum Tube Phono Preamplifier
    Tube Phono Stage
    • Garrard 401 with DIY Plinth
    DIY restoration of a vintage Garrard 401 idler-drive turntable, on which I just completed a six week redo of the custom DIY built plinth, due to problems getting the finish right. I sawed the front off, and removed all the top pieces. A 1" thick slab of Purpleheart with an oval Australian Mallee Burl inlay flanked by a different hardwood species I can't recall were added. A new arm board of Purpleheart and the Mallee Burl was made, and the pivot-to-spindle distance was adjusted to provide for easier cartridge to headshell connections.

    Top pieces were fashioned of Purpleheart, and a new labor-intensive finishing process (new to me, anyway), of Waterlox Tung Oil Sealer/Finish, followed by Waterlox Gloss Tung Oil finish. At least a dozen coats were applied between the two, each coat requiring 24 hours between applications. Thanks to Pierre France for his help in guiding me on the tung oil finish.

    I serviced the motor, cleaning, oiling, and replacing the suspension springs. Glad to finally be done, and finally satisfied. Analog withdrawals were starting to set in, but it now looks better, and sounds better as well.
    • Dynavector DV 501
    Bi-Axis Tonearm. DIY rewire with Cardas wire. This arm works well with a diverse group of cartridges, to my surprise.
    • Audio Technica AT ART-9 Cartridge
    Moving coil cartridge, just installed. After only about two hours of run-in, at 47K, it's already the best cartridge I've ever owned.

    I've determined my analog front end is much better than I realized it was. I've never enjoyed my vinyl as much as I am now,
    • Audio Technica AT 440Mlb
    Recent purchase, new AT MM cartridge. I've always been curious about AT cartridges, so I bought this one off Ebay. I really like the sound of it, actually pretty good, considering the low price.

    Makes me even more curious about AT carts. I may have gotten myself in trouble, as curiosity is expensive in this hobby.
    • Acutex LPM M320 III STR
    Lowest Possible Mass, Tri-Induction Magnetic System, 20-45Khz, channel separation 33db@ 1Khz, weight 5.45g.
    • Denon Zu Denon 103R
    Potted moving coil in 6061 aluminum body/w ESCCO sapphire cantilever/Paratrace stylus upgrade. This cartridge has proven to be the best of all my cartridges, and not by a small amount. Beautiful.
    • Dynavector XX2MKII
    Moving coil cartridge. Just re-tipped by Soundsmith with their top-line OCL re-tip. Made a great cartridge even better.
    • Acutex STR 415
    Ultra-lightweight MM cartridge
    • TTW Copper Mat
    Solid copper machined mat, great addition to 'table.
    • TurnTableWeights VPI Heavy Brass Clamp
    TTW Brass clamp I modified so it will work with their copper mat. (Threads would not engage spindle threads).
    • Pete Riggle VTAF
    VTAF on-the-fly modification by Pete Riggle for Dynavector 501/Garrard 401 Teflon and burnt silver finish options
    • Orsonic AV 101b
    Headshell
    • Mint LP Best Tractor
    Etched-in-glass cartridge set-up tool
    • DIY Ultrasonic Record Cleaner
    I've just completed a DIY Ultrasonic Record Cleaning machine, this the creation of BBtx, of DIY Audio. I thought it a very unique design, one that melded convenience, simplicity, and build quality.

    If I were to say I am pleased with it, it would be an understatement. For a couple of hundred bucks, it can't be beat. I've hankered for one of these for years now, and thanks to BBtx my needs have been fulfilled.   
    • VH Audio Flavor 2 DIY Power Cord
    Built this AC cord for use with the Transcendent Grounded Grid preamp. Great sounding AC cord.
    • Paul Birkeland 812 Power Amp
    3C24 tube power amplifier changed output tubes to 812. Paul, the designer/builder, brought over four different amp choices to try out on my custom HPD 315 Tannoy speakers. After having problems with 3C24 tubes, Paul changed the amplifier to run 812 output tubes.

    The amp sounds much better, more powerful, and I like it even better now. My thanks to Paul Birkeland!
    • Audio Assemblage (Sonic Frontiers) SET 300B
    300B SET Factory Upgraded, with EML XLS 300B Tubes. Just serviced by Paul Birkeland. All critical measurements were taken, two bad Blackgate bypass caps were replaced with higher-rated Nichicon caps, and the filament voltage was optimized to better suit the EML XLS 300B tubes.

    This amp now sounds incredible. Paul informed me the transformers in this amp are Magnaquest, to him about as good as you can get. He also informed me this amp sounds as good as any $5000 SET 300B amp available in today's market.
    • Emission Labs 300B XLS
    Robust drop-in replacement for 300B.
    • Class D Audio CDA 254
    Kit built Class D amplifier. Running two, in bridged mode, providing 500 Wpc into 8 ohms.
    • Class D Audio CDA 254
    Two channel amp converted into three channel by virtue of adding an additional CDA 254 amp module, RCA input, and single channel speaker terminals. Price for parts for modification: $194
    • Musical Surroundings Fosgometer
    Azimuth adjustment tool.
    • Custom built crossovers Custom DIY
    I've just completed an update on the crossovers for the custom HPD drivers. I actually used all the parts over again, including much of the solid silver hook-up wire. I made new mounting boards, and ran the wiring under the board, for a much cleaner look. I used heavy copper terminal lugs, which I modified to use a flat male spade connector, rather than wire. Wire runs are much shorter as well.

    I made new outlet cables, using Furutech locking bananas, and Cardas binding posts. I can't tell why, but this update improved the sound of these speakers much more than I expected. I've never heard electric guitar sound as it did on Steve Cropper and Felix Caviliere's "Nudge It Up A Notch", Cropper's guitar sounding just as he had wanted it to sound, with gorgeous tone, unlike anything I've heard before on a recording.

    Next is an internal speaker wiring update.

    I've just completed changing some components in the crossovers back to their original values. 27ohm resistors changed back to 47ohm, .68mh inductors reverted back to the original .82mh. I'm beyond pleased.
    • Tannoy HPD 315 w/Hard Edge Conversion
    Twelve inch Dual Concentric HPD driver in custom enclosure.1 7/8" wall thickness with custom designed and built crossovers. Weight is 200lbs. each. Finished in Pommelle Sapele.

    A complete rewire of the internal wiring was just completed. I made a 1/4" X 1/2" Teflon terminal board, with double-ended male spade connectors at the speaker. Wiring was completed at the input end with new crimped and silver soldered connectors with color-coded heat shrink tubing, and color-coded electricians tape.

    The results are a major improvement in clarity, detail and dynamics. These great speakers have just gotten much better at the things I love about them.

    After further study of fine wood finishing methods, and purchase of additional sanding/polishing medium, I again sanded and polished the enclosures for my Tannoy HPD 315 drivers. Got it right this time, now they are done. Next is the plinth for the Garrard 401.

    Dan

    8/3/19
    Some of you may recall my changing resistor values in my Tannoys back to the original value, to good effect. In that same vein, I just modified the .68mh inductors back to their original value of .82mh. I felt at the time when the crossovers were first built, the high frequency output was out of line, so I reduced it to better suit how my system sounded at the time.

    I had saved the .82mh Alpha Core ribbon inductors, and I changed them out yesterday. The results have shown me how much my system, as a whole, has improved, due to how well it sounds now as opposed to back 8-10 years ago. I feel I'm now getting what I was supposed be hearing all along. It's a great feeling. Now I no longer wonder what Dr. Arthur Loesch was thinking when he gave me this crossover design so many years ago now.

    Regards,
    Dan
    • Townshend Audio Number Four Size Seismic Podium
    Large Podium to fit under my 200lb. Custom Tannoy speakers. They are 17" W X 20" D X 48" H.

    These isolation podiums have made my speakers sound as never before. Just better wouldn't describe it. I have never before heard anything sound this way in this room, or perhaps any room I have visited.

    These Seismic Isolation Podiums are very special in what they do. They're expensive, but worth it for what they do for speaker systems. 
    • KEF Q 650c
    Newly added Kef Q 650c center channel to upgrade from my old Kef Reference 100 Center Channel speaker. The Q 650c is all I could have wanted or hoped for. Multi-channel music is way better now, as is Home Theater listening.
    • Pioneer S-Z9 Designed by Andrew Jones
    Nicely made small monitor speaker. Dual Concentric midrange/tweeter with an additional bass driver. Gloss Black, and a nice upgrade as my surround sound speakers, replacing the nearly twenty year old KEF Q 15.2 speakers I was using for surrounds. Multi-channel music now has better depth and clarity to it.
    • Crown International XTI 2002
    Running bridged to single channel. This amplifier (rated @1600 watts into 8 ohms) has taken charge of the Tannoy 15" passive sub, and turned it into the most musical sub I've yet heard.
    • Tannoy Sub 15i
    15" Passive Tannoy subwoofer. with the Crown XTi 2002, does a superb job of matching, and augmenting, frequencies below 50 Hz.
    • Tempo Electric Big Twist Silver/ pair for each amp
    12 gauge solid-core silver in teflon tubing, 3 meters
    • Synergistic Research Various cable models
    Interconnects, speaker cables, and power cords different models.
    • DH Labs Silver Matrix
    From phono to phono stage, internal cabling in speakers and crossovers.
    • Vibra Pods various
    Pods and cones under amps and most components.
    • Walker Audio Reference Hi-Def Links
    Eliminates ultra high frequency hash in signal.
    • Audio Metallurgy AG-0
    Silver coated oxygen free 22ga. copper
    • Quasi-DIY Velodyne/Eminence
    An old Velodyne 1250-X sub that had a 12
    • Tannoy Crossover Schematic
    Crossover design donated to me by Dr. Arthur Loesch.
    • Dynaudio Sub 500
    Just purchased, this thing is bad to the bone, in a very good way. Sounds great for Music and Home Theater both.
    • Panamax M5400-PM
    Voltage regulator.
    • Hypex Electronics UcD 400 Stereo Amplifier
    Just built from a kit. Great souunding amplifier.

Comments 604

Showing all comments by charles1dad.

View all comments

Dan,
You're in a very fine position in regards to your system and I'm glad you recognize this. You have two amplifiers that you can enjoy at anytime and that's to be admired. Which ever presentation you're in the mood for it's right there. Many folks are striving to reach what you have achieved.
Charles,

charles1dad

Hi Dan,
Congratulations on your successful amplifier building project. Enjoy the fruits of your labor.
Charles,

charles1dad

Hi Dan,
Your room is neat and attrative, yes those Tannoys are gorgeous! Most important is the joy you consistently derive from the beautiful music you hear in this system. You've done an excellent job.
Charles,

charles1dad

Dan,
Your Garrard looks gorgeous! You did an excellent job with that plinth. The best part is it must sound as beautiful as it looks. You should be proud.
Charles,

charles1dad

Hi Dan,
I love it when I read that others are really enjoying music with their systems. You seem to be having a ball! No doubt the First Watt is an excellent amplifier. I do however understand your "realism"regarding your 300b SET amplifier.It's very hard to live without once exposed to it.
Charles,

charles1dad

Dan,
SET amps and a good active line stage are a match for excellent sound.Your system has evolved into something special and has elevated your enjoyment/engagement substantially it seems.
Charles,

charles1dad

Dan,
You seem to be having much fun with your system, keep it up!
Do you prefer the active or passive line stage with your SET amplifier?
Charles,

charles1dad

Dan,
My line stage is a mixture of what you'll be comparing (sort of). It's an active unit (two 101D DHT tubes) but it has transformer volume control for sonic purity (according to the builder/designer). The overall concept is very simple- minimalist circuit like your Transcendent.
Charles,

charles1dad

Dan,
I believe that the minimalist designed active Transcendent could be a very good fit with a good 300b SET such as yours . I look forward to reading your impression and comparison, should be fun and interesting.
Charles,

charles1dad

Dan,
You're obviously doing quite well with your current 300b SET based on the attributes you describe and joy it provides for you. Although there are diminishing returns the SET performance goes with the output transformer quality for the most part ( and of course power supply). It's the naturalness/realism that seperates SET from the others in my own experience. I can't live without this characteristic now that I've become accustom to it.
Charles,

charles1dad

First Watt and SET, simpler class A circuits with fewer parts wins again. Both of these will keep you happy for many years. Dan when you find an amplifier more natural sounding than a good SET let me know.
Charles,

charles1dad

So it is between the VAC or the First Watt M2? Which of these two amps compel you to listen for longer periods of time with more emotional inolvement?

charles1dad

Dan,
There are worse "pickles" to be stuck with, you have 3 amps that you really enjoy. How is instrument tone, naturalness and presence of the M2 compared to your SET? Have fun!
Charles,

charles1dad

Dan,
The First Watt M2 and your 300b SET make for an intriguing contrast, both good but different.
Charles,

charles1dad

Jet,
I'll agree to some inconsistency for Quinichette from one song to another. On certain cuts he sounds gorgeous. He's a very good musician but not as masterful as the others you've mentioned. Mann was excellent and Clifford simply one for the ages as was Sarah.
Charles,

charles1dad

Brett,
You sacrifices for humanity are much appreciated, you are indeed noble.
Charles,

charles1dad

Hi Jet,
I don't know if your vinyl LP and my CD vary much but Quinichette's tenor saxophone has fully developed tone, body and very resolved texture to my ears, just pure beauty. Same impression with Herbie Mann's flute as well.
Charles,

charles1dad

I've had this CD for a long time and as my system has evolved this recording just continues to sound better as a reflection of the improvements. So I give much credit to the recording engineer who obviously had good ears and talent.
Charles,

charles1dad

Hey Dan,
Good to hear that! Enjoying your music is the sole reason for this fun hobby of ours.
Charles,

charles1dad

Dan,
I only meant did you like Clifford Brown's playing as much as Sarah's singing. His trumpet sounds so good on this recording, nothing more. I share your thoughts regarding all genres of music should be handled well by a good system.
Charles,

charles1dad

Hi Dan,
How does Clifford's trumpet come across with your system? I love the entire CD but his solo on the song "Jim" just connects with me no matter how often I've heard it, pure emotion in his horn. Paul Quinichette's tenor saxophone is beautifully played and captured, what a lovely full tone he had.
Charles,

charles1dad

Dan,
Does your VAC set up with silver cable now equals the SET amplifier system?
Charles,

charles1dad

Hi Dan,
Not surprised at your solid core silver cable-SET success, I find this combination an ideal match. Natural, beautiful and real.
Charles,

charles1dad

Hi Dan,
Thanks for the suggestions, I'll follow up on some of these recordings.
Charles,

charles1dad

Jetrexpro,
I know we've talked about these tubes and I'm glad you're willing to try them. Let us know what you think of them when you find the time. It's interesting as we're all using different amplifiers.
Merry Christmas to everyone.
Charles,

charles1dad

I love good quality solid core silver with my tubes and especially SET amplifier.Auditorium 23 has a stellar reputation so this would be an interesting comparison for certain.
Charles,

charles1dad

Isochronism,
Your loaned pair of the Sophia Royal Princess(RP) sounded wonderful in my amplifier( significantly better than the very respectable Sophia princess mesh). It's so good to have true upper echelon 300b tubes available for our listening pleasure. RP, Takatsuki, EML, KR and also the AVVT (When you can find them) You can't go wrong with any of these and it will simply be individual preferences(I suspect it could vary with the given amplifier as well).
When Dan noted the realism of the cello's(Beethoven) sound I smiled and nodded my head, I knew what he was meant.
Charles,

charles1dad

Hi Dan,
You should be very pleased with the purchase of your amplifier . It has the resolution and transparency to exploit the attributes of the premium level 300b tubes. Your found yourself a good amp.
Charles,

charles1dad

Dan,
Well written and I understand you sincere joy with your SET based system. SET amplifiers are very simple circuits and if built and implemented well, the music signal will be pure and transparent. You have a good quality SET so I'd expect it to respond to the higher quality 300b tubes.

I believed that the EML XLS would yield a considerable upgrade in sound quality as you have confirmed. Dan the sound will continue to improve as the tubes acquire playing time. All you have to do is just sit back and enjoy your natural beautiful sound.
I'm glad you took the chance and tried these wonderful 300b tubes. We're both completely smitten by the holistic-organic music reproduction of SET systems.
Charles,

charles1dad

Dan,
I'm interested to see what your impression of them are once you hear them. I think you made a wise choice, good SET amps deserve good tubes
Charles,

charles1dad

Dan,
I have just spent the past several days listening to the Sophia Princess mesh 300b sent to me by an audiogon member. He wanted me to compare these to my Takatsuki and EML XLS. My impression is that the mesh is a good sounfing tube but the other two are superb and noticeably better across the board. More transparent, open, dynamic and more resolved and nuanced.
Charles,

charles1dad

Hi Dan,
No attempt to dissuade you from purchasing the magnificent Takatsuki but the EML XLS is an excellent 300b to seriously consider if the Takatsuki is too costly. I own both and love them. These are premium level tubes and are much superior to the average 300b
Charles, .

charles1dad

Dan,
It sure was a good decision to get that 300b amp.You really seem to be having a ball listening to your music.This doesn`t surprise me.
Charles,

charles1dad

Dan,
It`s gratifying to read that someone is genuinely happy with their audio system and simply enjoys the music .Reading this and other forums you come to realize this isn`t the case for some. Tannoys seem to generate two camps, SET amps are terrific with them, or Tannoys need more power than a low powered SET provides. Maybe it depends on the specific Tannoy model.Bottom line, I`m glad it worked out so well for you using a lower power SET amplifier.You took the chance and the result speaks for itself.
Charles,

charles1dad

Dan,
I'd agree a back up amplifier is a good idea. Istill have the PP amplifier I described and also an Audio Prism Debut PP El 34 amp (from way back, a really good 40 watt amp).They're both collecting dust.
Charles,

charles1dad

Dan,
You`re welcome. I can easily relate to your situation .My prior amplifier was a "very good" 100 watt push pull class AB, 6550/KT 88 tubes ultra linear(60 watts in triode). I really enjoyed this amp, once I got the Frankenstein SET 300b There was an immediate sense of improved emotional connection to my music.The sense/presence of living flesh and blood musicians went to a higher level. The PP amp provides more bass impact and weight(narrower gap then you`d think however).Both go louder than I`d ever utilize.m In every other parameter you can name the 8 watt SET is just more involving,realistic and enjoyable.It has been nearly 4 years now and I feel more strongly convinced than ever before.I can`t go back.My system simply became more captivating and engaging with the introduction of the 300b amplifier.
Regards,

charles1dad

Dan,
Some people will fixate on the stated power rating of an amplifier and conclude,not enough power. This certainly can be the case depending on what amp and which speaker. The 2nd issue is amplifiers rated at the same wattage output can be dramatically different in sound and drive ability(better transformers,power supply,parts etc.). Fortunately you got pass the mental barrier and trusted your ears (the best method of all).
Regards,

charles1dad

Dan,
That's good news and I'm glad you took a chance on the 300b SET to drive your Tannoys. The better the 300b tube , the better the sound.
Regards,

charles1dad

Dan,
It's hard to say how hot a transformer should be, it probably depends on the design parameters. The Coincident amplifier transformers get mildly warm and nothing beyond that. Dont know if this has any meaningful significance or not. Your amp's transformers look stout and you have upgraded parts.The bottom line is this, you're getting very good sound with them driving the Tannoys.
Regards,

charles1dad

I understand Dan, tubes and solid state are just different , both have their supporters. For what matters to me the most, lower power tubes amplifiers and especially SET give me more of it.What 300b SET are you using?
Regards,

charles1dad

Hi Dan,
That's very good news, you never what the outcome will be when inserting something new and unfamiliar in your system. The Tannoy is interesting , some say they are truly exceptional with SET amplifiers. Another faction insists you must have more power than a 300b SET provides. It appears you chose a good quality SET, congratulations.
Regards,

charles1dad

Dan,
The JJ is a solid performing tube but there are better.Keep a look out for used EML, Psvane or the Shuguang Black Treasure as good upgrades but not uber priced.SET circuits are simple/transparent so you'll really hear the differences among the 300b tubes.
Regards,

charles1dad

Dan thanks for your comments.If your SET has high quality transformers and a stiff power supply you'll be in good shape. Those two areas make or break a SET amplifier. Which 300b tube are you using? The better ones definitely make a considerable difference.
Regards,

charles1dad

Dan,
I enjoy reading your posts on this site.
I`m interested in your impression of a 300b SET with your Tannoys. Opinions seem very split,either yes it`s a great match, or no,they need more power.The quality of the amp itself is also a variable,some SETs are just better than others.
Best of luck,

charles1dad