I posted this question to the SVS tech support, but I figured I would solicit advice over here until I heard back from them. I'm picking up a radio station from my SVS 20-39PC. I'm not sure if it's because of the receiver, my electrical wiring or the SVS amp. A radio signal is played on all of my speakers only when the SVS is plugged in. If I turn the SVS on, I can hear the signal from the SVS driver as well, but if the power to the SVS is off I can only hear it on my other speakers. This only happens when the SVS is plugged in to the electrical outlet. I even tried it when it was plugged into a surge surpressor, and the radio signal still came through even though the surge surpressor was turned off. The SVS amp power cord does not have a ground on it and it is not polarized. I also plugged it into a UPS and the signal went away when the UPS was unplugged, but came back as soon as I plugged the UPS back into the wall. It seems like that would narrow it down to my home electrical wiring, but I'm not sure if the receiver or the SVS amp would have filtering components that aren't working properly. I have no way of testing another sub or receiver. Any help would be greatly appreciated as it is extremely annoying to hear that signal come through every time the movie has a quiet moment. The radio signal isn't very loud and it isn't dependent on the volume of the receiver (Onkyo 575x).