My 5.2.2 living room system has two BIC floor-firing 12" subs. The room is approx 14' by 24', but only about 14' by 14' of it is used for the home theater. Mains are upgraded Klipsch Forte II's. I am thinking about getting a way better subwoofer since these were pretty low-budget. Floor is not carpet, if it matters. It is LVT. Perhaps I could get more bang for my buck if there is a kit someone might recommend. My TV table has room underneath for one or two 12's not a 15" I do not think. I would imagine that one decent 12" would do the trick and that two is probably overkill in this room. ..... Perhaps there is a killer (non-kit) brand that you think I should consider. I imagine that if I find a kit, that it would not be powered, so I'd need an amp. Thanks!