Here's the quick and dirty on part of my system: Denon AVR 2803 NHT SW2P sub (unpowered) with a NHT amp We moved into our new-used house this past summer. Before hooking up the system, I purchased the above referenced reciever. When I hooked up my old optimus sub, it buzzed. I didn't investigate further as I was planning on upgrading the speakers which it did...to a NHT satalite-sub system. Now my new-used SW2P buzzs too, as it has from the get-go. I'm to the point where I have to have the amp at 1/4 volume or the buzzing is unbearable. The subs' amp uses a two prong power cord which is plugged into a cheap-0 power strip along with the rest of the stereo components. The reciever and amp are connected via a 'signal cable', the amp and sub are currently connected via Home Depot 12 guage speaker wire. I do not have cable or satilite hooked up to the TV, just an antenna. However, the PO left her dish (mounted outside) and the dish's cable enters the house (to a box) about six inches from the sub. I find if I move the power strip the buzzing gets worse or better, but never goes away. The back of Amour(sp) is a big cluter-f#@k of wires and cables. Any help, I'm pulling my hair out!!!