Try using a ground 'cheater' plug that lifts the ground connection of a 3 wire AC plug on your power amp. You can also try reversing the AC plug in the outlet and see if that helps. Try unplugging your video display and see if the hum goes away. You can also try the 'ground cheater' plug on your video display. If all else fails, unplug _everything_ except the 950, your sub and it's amp. Start plugging things in until the hum returns (assuming it went away with everything else unplugged). This will at least isolate the culprit. You can also try plugging the video display into another power outlet. Some power amps have external posts that can connect the chassis ground to the AC ground. If your amp has such a connection, play with that. Another alternative would be to try the 'component' video connection if your display supports that.

Hum can be a pain, but there is always a cure for it in there somewhere if you dig deep enough.

[This message has been edited by soundhound (edited December 01, 2002).]