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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: PP2000 buzzPosted by drdna on: 2/20/2009
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 Romy the Cat wrote:
Is your “noticeable ever-present buzz” coming from loudspeakers (I mean is it acoustic noise) or is it a mechanical noise that coming from regenerator and it comes from your component plagued into the regenerator. In first case it ground loop, in second it is DC component. What does it mean “directly in the listening field? Doe it fluctuate with volume? Does it changed with lifting ground on regenerator load? Dose it change with change of sources?
I am quite sure it is a ground issue, as it is noise coming from the loudspeakers regardless of source or volume. Lifting the grounds on the amplifiers and unplugging the PP2000 from the wall so that it runs on battery power eliminates the problem.

The reason that I classify it as minor is that it is a very pure 60 Hz tone that occurs much like someone in the orchestra had set a little tone making machine in the far side of the brass section. It does not eliminate the benefits from using the PP2000 overall.

I will contact the company about this as well.

Adrian

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