I know the UB's ;-)

But there we have the problems with the room size and acoustics, time differential and phasing issues. Nothing is perfect, but for me a system needs to do 20Hz flat and below with pure raw power. The Grand moves a huge amount of air just for 250 to 70 where all the acoustical power is. A fascinating system :-) Not to mention the fully activated system and no passive components.

-Flo