I was gonna put this in the speaker forum but I think it's my receiver.... at high volumes, I'm notcing a faint buzz in the background, and the louder I make it the louder the buzzing is. It seems to only be coming from my front left & right speakers, not the centers or rear speakers. I have 4 JBL N24 speakers and a N-Center (I think that's what it's called). it was 5 speaker package deal that I got. Anyway, the speakers have always been great. I took one of the rear speakers and replaced it with one of the front speakers, and the buzzing was still there, so it leads me to believe it's either the receiver or the maybe the cables, which is standard monster speaker cable. I notice the buzz the most when I'm using stuff with optical connections, like my DVD player, Xbox and Cable box, my CD player is connected with RCA jacks and it doesn't buzz at all even when it's very loud. This is something recent though, it didn't used to be like this. I don't know much about wiring, but I've heard that speaker cables and video cables and power cables shouldn't be near each other if you can help it, and well all of my cables are in a big pile of spagetti behind my "entertainment unit". Could this be what's causing it? Should I go out of my way to keep the cables seperated? or could it be my receiver dying? I have a Yamaha RX-V620, it's about 2 years old, i've never had any problems with it before. Does it maybe need to be cleaned? The guy at Tweeter said I should get it cleaned once a year but i'm lazy and never did anything.... Any ideas?