2. amps-preamps
  3. 1236409165

Strange ground loop...?

Hey,

I just hooked up a new amp and I'm having a strange noise issue. Only in my right channel, I get this high-pitched whine... maybe around 2khz. My left channel is dead silent.

The problem seems to be an interaction between my DAC and my amp. If the DAC is off, the amp is silent.

The amp is an 84' yamaha, so the cord has no ground. There is a ground screw, though, and I have connected that to my power conditioner, hoping this would solve it... nope.

I've tried plugging the amp straight into the same outlet that the power conditioner is plugged into (into which the DAC is plugged in). That actually did work... but I don't want to run my amp straight into the wall.

I suspect I just need to find a proper place to run that ground wire...

Any ideas?
djembeplay
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djembeplay OP
179 posts
 
Another update -

I just swapped out one of the BlueJeans ICs with an old Monster IC I had and the problem is completely gone... no whining or distortion at all.

Unfortunately, I don't want to use my old Monster cables... so I guess I will have to send all my BlueJeans cables back and get something else. Bummer.
kijanki's avatar
kijanki
4,446 posts
 
Bob - what do you mean by "coax interconnects"? Are you talking about digital cable?
djembeplay OP
179 posts
 
U guys think I should just try some different cable?

I seem to be out of options with my current BlueJeans LC1s.
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