For reference, my 800v4 is at 1/3 gain on its knob, my Onk turns it down an additional 2 dB and it shakes the whole house when called for in movies and it's freakin' amazing with music. That's in a 4,200 cu. ft. room. You'd have no idea a sub is in the system because it blends so darned well.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated