In reply to:
In theory, if a source is not sending a signal to the amps for amplification of that signal, then there should be no electrons traveling through the speaker wires to the speakers.
There's an inherent DC voltage in pretty much anything in the real world. (ever made a potato battery? - yes I realize that's an electrolytic reaction...) that along with a little wee bit bouncing around in the amp are what gives you the hum.
Speaking of hum... does anyone watch American Idol? I've started watching it with the S/O the last season or two and I'm surprised how much hum the "pin 1 problem" in FOX's crowd mics exhibit!
Bren R.
