I just had my HT setup re-installed and I can't get any sound from my sub whatsoever. I have a Boston PV-600 ( I think that's the model number) and I have a Denon AVR-3300 receiver. I seem to remember having trouble the first time I set up the receiver, but I can't remember what the solution was. I have the Receiver settings set to subwoofer-yes and LFE. Any ideas?