Stereo Exchange, they put in a new audio room several (maybe 6 years ago). Very expensive and "well engineered". It was the worst. As it turned out, the bass traps (which were actually resonators built into the wall) were all tuned at the same frequency (100Hz I believe). So the result was no response at 100Hz and uncontrolled responses everywhere else. Best room: Stereo Exchange, after they figured out the problem and fixed the resonators to the variety of frequencies they originally intended. As it turns out the room was well designed, and well engineered, but apparently someone thought if they built all those "things" (the resonators) the same, no one would notice--oops. Now the room sounds great, and it is truly a pleasure to listen to the equipment--and not the room.
