Ok I did a little test and disconnected all the RCA cables between the amp and processor. I turned the amp on and flicked the switch for the ceiling fan a couple of times. The pop was still there, but was much quieter, and was barely noticeable. When I reconnected the RCAs, leaving all other equipment off except the amp, the pop was back and much louder. I'm not sure what to mak of it at this point, but am thinking of switching out the RCAs for XLRs to see if it is any better than the RCAs. Any other thoughts?
Also, I currently have everything (including sub and coax) running through a Monster HTPS-7000 power center, so everything shares a common ground and should be filtered for noise and EMI. Disconnecting the Coax from the wall does nothing.
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