Current setup:

Sony DVD/SACD player into
Denon 2803 into Infinity Entra Two (MTM) Center channel (90db)
Hafler DH-500 into Infinity Entra Three (TMM) Fronts (91db)
Hafler DH-500 into Infinity Entra Two (TM) Sides (90db)
Hafler DH-225 into two Infinity Centers (rears, mounted 3" from ceiling - 89db)
Twin Dayton Quatro 15 ported subs - 5.5 cubes, 18.5hz tuning

Seating position is approximately 12' from center (projection screen).

Problem: This bit just doesn't "hit" hard enough. If I throw in a concert DVD, and torque on the big round dial, well, you can pretty much still have a conversation. I also have two more Quatro15 drivers NIB in my closet.

So...

Thinking 4pi Theater series? Or is this not a good idea?