How to ground a Rotel RLC 1040

[yanies]

I was wondering how to ground my Rotel power conditioner so I can eliminate a hum noise that is coming from my I mac computer.

I bought a 8 meter cable 1/8" Stereo Mini Plug (3.5 mm) to Dual RCA Termination so I can hear music from my computer to the speakers.

I plugged in the RCA's to the back of my Rotel pre amp RC 1082 and I hear a hum noise.
The power conditioner in the back panel it has a system ground screw that the manual says it eliminates the hum noise.
But it doesnt say how to do it.

I would appreciate any recommendations and advices you may have

Thanks a lot


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Turntable Thorens TD 166 MK VI

DVD Rotel RDV 1045
Tuner Rotel RT 1080Pre Amp Rotel RC 1082
Power Amp Rotel RB 1080
Power Conditioner Rotel RLC 1040
Infinity Kappa 7.1 Series II
HDTV Panasonic TH-42PZ77U
Monster Cable Interconnects
Straightwire Rhapsody S Biwire Speaker Cable

[Kevin D]

You can try it, but it's probably not going to fix your problem. With an 8m cable, I'm assuming your computer is not plugged into the 1040. For the grounding lug to do anything, you would most likely need to run a ground wire from your computer case to it.

Your best bet is to run an optical cable over to the PC if you have that output, or get a USB soundcard with optical out. Or you can get an RCA level ground-loop isolator.

Or you can plug the I mac into the 1040..

Kevin D.

[hifiguymi]

A digital cable isn't going to help in this case unless there is an outboard DAC that's not mentioned since the system has an RC-1082. The ground wire is the best bet to try without getting a DAC of some kind.

Eric

[Kevin D]

Doh... I concentrated on one side of the equation..

Thanks,

Kevin D.

[yanies]

Well, I think I have to start trying the methods mentioned above one by one
The ground wire method sounds good too.
I am thinking contacting Rotel too. I wish the Pre Amp Rotel RC 1082 had a USB connection for hard drives.
Wouldn't be that fun?
Thanks anyway