Axiom Home Page Forums General Discussion Home Theater power conditioners

The AC plugs have a wide and a narrow blade. Most outlets will accept the plug with the wide blade on either side. Try unplugging, then rotating the plug 180 degrees, then plugging back in again.

Alternatively (if your outlets don't cooperate) disconnect the input signals (satellite, cable box etc..) one at a time to see when the hum goes away.

If you still get hum when only the amp and speakers are plugged in and hooked up that's probably something different, but usually grounding seems to be the issue.