Many thanks to all! Some vigorous jiggling of the miniplug, and some careful dressing of all the cable runs, seem to have done the trick! Much appreciated.
computer audio ground loop hum--any suggestions?
I recently installed a new power supply in my desktop. Everything works, but I have acquired what sounds like a ground loop hum in the speaker with the on/off switch and volume control (and the hum gets louder as I turn up the volume). There is no hum in the other "satellite" speaker. The power lead from the woofer unit only has a two-pin plug on it, so there's no chance of using a "cheater" plug to life the ground, although it seems as if that wouldn't have worked anyway.
Any suggestions?
(FWIW, the wiring scheme is pretty standard. A lead with a stereo minijack takes the two-channel audio from the back of the CPU to the back of the speaker with the on/off switch and volume control. Another thicker lead from the back of the speaker goes down to the "woofer" with a multi-pin connector going in to the woofer. A second thinner lead coming out of the same multi-pin takes audio out to the other "satellite" speaker. A separate power cord from the woofer goes to the power strip.)
Any suggestions?
(FWIW, the wiring scheme is pretty standard. A lead with a stereo minijack takes the two-channel audio from the back of the CPU to the back of the speaker with the on/off switch and volume control. Another thicker lead from the back of the speaker goes down to the "woofer" with a multi-pin connector going in to the woofer. A second thinner lead coming out of the same multi-pin takes audio out to the other "satellite" speaker. A separate power cord from the woofer goes to the power strip.)