Need Help Confirming This

[allstar780]

I'm on vacation visiting family and my uncle has an issue with his speakers he wants my help with. He's got everything run through a great surge protector but I don't think it has conditioning at all.

The problem as he describes it:

"When I'm watching anything with the volume up higher, when it has a quiet scene I hear a low clicking noise coming from the front right speaker"

Now he said he's already tried switching the wires (running the wire to the left channel... same problem with the left channel speaker then) and its still having this issue... I think a line conditioner should help unless there is a problem with the receiver itself.... Anyone got any other ideas I should try if this doesnt solve it?