I am running a Marantz recieiver and noticed some static sound and crackling that would come and go from my front left speaker. I checked the cables and everything is ok, nothing seems to be touching that is and now tonight went from just the occasional crackle to no sound at all. Any ideas what the hell this would be from? Is it possible that the channel to that speaker has gone bad? I tried my other speaker in place of it and it was the same thing so I am sure the speakers are good. How annoying when I was just considering selling it and updating my system.

Any ideas?