Between QS4/QS8 and VP100/VP150 the main differences seem to be power handling and the ability to go very slightly lower in frequency which might allow a lower crossover frequency.

That is a big HT area, particularly front to back. Not a problem (I think it's going to be GREAT) but you are definitely going to need reasonably large mains and center to handle the distance and keep a decent SPL.

My first thought would be definitely Epic 50 but you might want to upgrade the center to VP150. I think the QS4s would be OK at 7 feet from the listener but not sure, might be worth checking with Axiom there.


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8