I have been getting what seems to be radio transmissions through my subwoofer. I have two stacked behind my right front speaker. Only the one on top seems to be getting it. Her's what I have done so far to remedy this: - I switched all my subwoofer cables - I put a interference filter in between my cable from the wall and my digital cable box - I have ferrite chokes on all my power cords and subwoofer cables - I have changed around all my power cords to different AC outlets. None of this is working! The sound coming from the one subwoofer sounds like a CB or Ham radio transmitting and receiving every 10 seconds or so. Anybody have any new ideas for me besides rewiring my house or buying new equipment? BTW, I have no other strange noises coming from any of my other speakers.