Club gig last night at one of our regular spots. Have been putting my rig together for a bit. Currently using a Carvin BX1500 that will bi amp to a pair of internal 300 watt power amps. 2x10 neo Genz Benz rated at 450 watts that I have used alone a few times has plenty, but it and every other cabinet was missing the low HZs at any volume levels. (I've used 15" with horns, 8x10s bi-amped, 4x10s, etc without this result). The sub is a BFG Tuba24 with a Rockford Fosgate 10" subwoofer speaker .... I crossed over somewhere 150-200 hz and kept cutting the power back to the 2x10....as the upper register needed less and my 2x10 was now nearer to ear level on top of the sub. Chest thumping... a bit of a haul and awkward, but wow.