How do I get rid of it? I tried to reroute all the wires going to the subwoofer and 4 speakers so they're not near power cords, and though that is virtually impossible, I thought it would help.
But it didn't... when I plugged the power pack back into the APS power strip/battery backup, it returned... sounded just as it did before.
We've had these Altec Lansing speakers a long time... they've just been unplugged for a while (year or so) since the hum started... but since going to broadband, I wanna be able to play YouTube vids.