Hi
I have the same problem. Dont know how to correct it. Two observation if I put the switch from off to standby it doesn't hum, but if i played music it continues to hum also in the stand by position. Its seems to have something to do with the input cables (line input) because the hum stops when take out those. But it hums when they are, even if the amplifier is off.
Have you found any solution?
/Paul
You have a classic ground loop. This occurs when equipment is connected, that has an electrical potential between grounds. The sub carrying the bass is most likely to reproduce it.
The most frequent offender, is cable satellite systems.
Start by making sure everything including the sub has the same ground. That means plugging everything into the same outlet. Then disconnect any cable or satellite leads and see if the hum goes away. If not disconnect everything from the receiver one by one until the hum goes away.
If the problem is the cable box which it usually is, then you can get a ground isolator from Jensen to fix the problem.
Follow this plan and let us know what is causing your ground loop and we will advise further.
