I think you’re right about how the drivers smooth out room noise. I don’t have your technical background, but it makes sense and certainly explains what I’m hearing. You have some remarkable systems, btw!
Beautiful system. I've always loved the craftsmanship of the upper-end Sonus Faber speakers.
I agree with you on the sub arrays. I have woofer towers with four 12" servo controlled drivers for each channel, and the bass is the smoothest and tightest I've ever had. I think the multiple drivers at different distances from the floor smooths out the room modes, and allows each driver to do less work and operate with lower distortion.
dtorc, no DSP. It might seem counterintuitive, but the Rel line array actually improves the mids and highs without adding any thudding bass. Overall, the low end in this system is clean, lifelike, and fast. Absolutely no bloat or boominess. The bass is balanced and not exaggerated at all. Very minor room treatment. Thanks for asking!
I'm curious - do you use DSP to help arrange all those bass notes being generated by so many woofers - sub and otherwise? Does it ever overwhelm the room, or did you luck out with a great room, or great skills?