My first post. I've had a home theater for about two years, but been disappointed in my Klipsch KSW 12 subwoofer. I suspect it may not be enough oomph for my size room. I calculate my room at approx. 4000 cu ft. My home theater is in the basement, berber carpet on concrete slab. Approximate dimensions are 30 X 17 X 8.5. I have an accoustic tile ceiling. Negligible amount of glass (windows). The room is wider than deep with the big screen offset from center about 6 feet. After lurking on the forum I've concluded that the two contenders for my $1000 investment are HSU and SVS. I am leaning towards the SVS PB2-ISB. My kids, wife and I listen at moderate levels. What are your opinions? And which sub do you recommend? I'd appreciate any feedback possible.