I have a problem with my amp. I have it hooked to a 7.1 surround pre out. I run the Thres. to my main speakers. When the surround amp switchs channels, it make a loud click from my right channel main speaker only. Someone has said it sounds like a capacitor discharging. I've switched the wires over from left to right on the main capcitors but the click still comes from the right side. What do you think?