[Patti Wagon]

I have one speaker (above passengers seat) that emits a soft sound (much like a quiet air conditioner) when the radio and TV power is off. No such sound coming from the balance of my other speakers. Any thoughts??

[RussWhite]

Patti?

Without knowing year of your coach my suggestion may not be applicable, but here goes anyway.

I had a similar situation in my '99 and the buzz was there even when the AC was off at the breaker panel in the coach. One day I tried removing the two small fuses in my transfer switch, and the buzz was no more. I have never replaced the fuses. I think the function may have been to send a signal to the bank of warning lights to activate the one that says you are plugged into post power. I was tired of the buzz and haven't driven off while plugged in yet :-)

When you have a moment it might be nice to put some information about your coach in your signature that will get attached to all your posts. Russ

[Richard]

That is one possibility. You might also look to see if the speaker wires are wrapped around or run parallel to any 120v lines. That can induce a 60hz hum

[Patti Wagon]

Thanks ... I appreciate your response!

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Another great thought... Thanks once again!

[rheavn]

Try shutting off your amplifier unit and see if the noise goes away.