a pair of vmps subs - size dependant on yer room size. a marchand deluxe xm-9 active x-over, 24db/octave - an extremely transparent & wersatile piece, able to integrate 'most *any* speakers-n-subs. a decent used s/s amp (or two).
the above will set ewe back max $2.4k, & will compete w/the best out there at twice the price or more, even if ya buy used - deep, fast, accurate, extremely low distortion.
imho, of course! ;~) doug s.
ps - my set-up is audio-only, but i don't see why these woodn't be great for h-t, either... ;~)