Here's my problem ... I've had a terrible RFI problem coming from my rear surround speakers. After a LOT of playing around with the system to try to figure where the "noise" is coming from, I've finally narrowed it down ... here is my problem - the subwoofer connection. I disconnected everything from the back of my receiver (an NAD), reconnected my components one by one, everything was working awesome, until .... I connected the subwoofer cable. I immediately heard the radio signal (the RFI) in my rear channel speakers as soon as I connected the subwoofer cable. I didn't even have it connected to the subwoofer ... it was just a loose cable connected to the back of my receiver (I still had the problem, by the way, when it was connected to the subwoofer). What's going on? Is it the "subwoofer connection" on my receiver? Thanks.