I also had the same problem going on for the past couple months. When you turn the volume all the way down on the speakers the right one remains on and you can't completely turn them off unless you use the PC volume control. So I was doing some research online tonight to see if there was a way to fix it and found your post here. It seems to be a common problem with no real solution. I adjusted all the cables and all the internal settings in the PC and nothing fixed it. About to give up, I turned the volume control on the speaker all the way down to where only the right speaker had sound coming out of it and I started messing around with the control base mounted underneath the speaker with the volume and subwoofer knobs. I started pressing on the front of the control panel to see if it would slide off the speaker and BINGO!! When I was pressing on the front of it the right speaker went dead silent. I thought I broke it until when I turned the volume back up and both speakers are now working correctly again and in sync. No more problems!!! (for now)
Just thought I would share my hi-tech solution to the problem. I must have knocked something back into place or tightened the connection.
Good luck!
