I have a smallish theater room, 11' x 17' x 8', or 1500 cf. Back of the napkin shows I should be able to get 105 dB in room to 15 Hz, without exceeding the driver Xmax. Correct? This is not accounting for room gain. So, should I go with the extra cost and complexity of a PR setup? Or will I be happy with a sealed/LT setup? I'm currently running DIY full range mains with 12" ACI SV-12 woofs in 2 cf boxes, and an LFE sub with an ACI DV-12 driver in a 2.5 cf sealed box. This is a dedicated HT setup. Sounds great but doesn't go looooooow.