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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: PurePower faulty assembly?Posted by drdna on: 6/8/2014
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 Romy the Cat wrote:
First of all I need to admit that I do not believe to people who claim that Purepower produces noise. My units are completely silent and I know other people who have completely silent Purepowers. I have no doubts that the people who report noise do have nose but I attribute the nose to their lock of competence to deal with ground loops. There is another issue – no matter now inapt Purepower folks are and how negligent their assembly and testing I do not think that they can do anything that would make the unit to have the noise while it maintaining in and out grounds and while producing proper wave.
If you recall when I had in my possession my PP2000, before I sent it for repairs never to be returned, I did have some buzzing. Now my system is otherwise silent, and while group loops are always a concern, I do not think I was at fault. 

As you recall, the buzz vanished when the PP2000 was unplugged and run in battery mode. Since everything was plugged into the PP2000, nothing else about the circuit was changed. The only change was basically to remove the part of the circuit internal to the PP2000 which acts to process power from the wall outlet. So, I came to conclusion that there must be faulty ground loop wiring defect inside the PP2000.

The idea of faulty assembly was further suspected when the PP2000 failed outright. Of course, we will never know what actually was the issue, since when I sent it back for repairs, it disappeared and I never received a replacement.

Adrian

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