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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Not convinced yetPosted by Lx_ on: 1/3/2011
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 PurePower wrote:
However, it is important to understand that the solution to ground issues will have to be found in the house AC ground wiring, not in the PurePower 2000. The 2000 produces a completely new 230 volt AC sine wave that is absolutely isolated from the utility input power. No sag, surge, transient, distortion or noise present in the utility AC will appear in the PurePower output.

If the 2000 output is really clean of any noise and only the ground carries whatever comes from the house ground, then how do you explain the tremendous sound improvement that lifting the input ground provides? I find it difficult to not incriminate the 2000, though I am more than willing to get insightful advice.

 PurePower wrote:
It is worth it to take the time and effort to ensure all ground circuits are properly bonded and correctly made., especially at the service entrance.  Sometimes it is relatively easy to resolve. Using a separate "isolated ground circuit" often is enough, but if the problem is severe, it won't be enough. Some European grounding systems are quite different than North American schemes, but we would be happy to offer some advice and support on that and any other PurePower issues, including dealer support. Just email me.

I will.

 PurePower wrote:
p.s. All of Romy's musings and tests on the relation between the electrical characteristics of PurePower units and his objective and subjective sonic impressions are not applicable to the PurePower 230 volt models. The difference in operating voltage makes a significant difference in electrical performance characteristics even though the technology is essentially identical.

I find it very hard to believe. Again, if the 2000 provided true isolation as it should, then there would not be such a gap in performance between running on AC and running on battery.

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