[scottmandue]

Just my two cents...
I think the whole subwoofer thing is over hyped, if you have a good set of full range speakers they will go low enough to cover most music.
Mind you I have a sub woofer in my living room but only because it is part of a home theater and it covers the explosions and super low rumble of movie sound tracks.
As an experiment you might disconnect your main speakers and play some of your favorite music and listen to how much (or I should say how little) comes out of the sub.

Edit to add, I am old school and back in the day speaker cabinets were HUGE! (As they should be!) so subwoofers were not required. I am probably being overly critical but I find a HIFI system with a sub usually sounds out of balance (not always but usually). I also prewired my house for speakers but the living room is the only space with a sub.