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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: That “education” takes too much of my time already.Posted by Romy the Cat on: 12/5/2010
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 AOK_Farmer wrote:
I think what they did was to put filters, maybe just a simple capacitor on the AC side to try and reduce the noise that the units inject back into the ac mains. Perhaps they were getting complaints that the units worsened the electricity noise in the rest of the buildings they were installed in. I think it is probably a simple fix and you shouldn't get too worried.

That is what I hope. If the problem that they charge the input EMI filters and the killed the sound then it would be easy to detect by juts bypassing the filters. The common mode filters do not need for DC-DC converters to operate and they are juts the environmental devises. They might change the primary resonance for the whole filter, or the elements of the filter or God know what and it might give that bad result. If it so then it would be great as it would be very simple to fix, not to mention that the filters are on the separate boards, at least it is how it was on my old unit. It might be however that they change the type of rectifiers or a type of DC-DC converters, or something else that is basically on the motherboard that would be more difficult to research and to experiment with. We do not know the block-schematic of PP2000 and we do not know what they did, so it is very hard to guess that went wrong. I disagree with the part that shouldn't get too worried.  This shall not happen, shall not happen, period. Why don’t you run to my house, not dive but run for the whole 300 miles juts with objective to listen most music in my room. What you reach me afar a week of ruining I will inform you that you can’t listen and need to run back as the system is not operational. Does it sound too attractive to you?

The good part for you is that it looks PP2000 need to be sold like wine – by vintage. “That year and that month PP2000 was particularly good.” I guess, I need to find out what year and that month was good, return all my current units and buy the proper vintage on used market. To do so, the PP2000 would need to have serial numbers but I do not think they do have serial numbers….

Anyhow, I would not speculate how it goes and will be talking with PurePower folks on Monday. I hope we will be able to fix my current 3 units, I sincerely hope we do. BTW, that what I was afraid from very beginning of my 3-units saga. I told before that good sounding PP2000 I would like to keep and to see if the new units would sound the same. I let my guards dawn after Bill got his 3 units and looks like did not complain. I have no idea what vintage of PP2000 he got and I did not test the PP2000 in his house but Bill sound like was very happy. I truly did not anticipate that PurePower would let itself to fuck up on product so radically. I need to know better… Anyhow, this “education” takes too much of my time already and I am begin to lose patience.

The Cat

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