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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="PurePower"]I'm sorry if my post seemed to be directed at your acoustic noise issue. It was meant to reply to 2 other postings that simply asked if the battery only turned on in a blackout and whether there was a difference in the audio s...
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Hi,
Have been going through this thread with great interest. Am also in the market for a good regenerator and have been doing some reading up on the online converting UPS. would anyone have any experiences with any of the commercial online UPS...
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[quote user="Romy the Cat"]
The PurePower Sonic results what low load is used are a very good illustration that the no-transformers, class-D approach might work out very-very well. I am sure that we will see more and more units like this…. With o...
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In my unit there is definately a change in sound running from wall from early in the day to late evening. In the late evening being the better. Before the Purepower this was much more noticeable but to quantify it, the worse day with the Purepower is...
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My main 6 speakers are modified Edgar horns with 105 dB/ watt sensitivity, and the others are overhead emotive speakers with standard 90 dB/ watt sensitivity. There are two JL self powered f12 subs, and 4 self built subs with a sherbourn five channel...
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Hi Adrian,There is a bit of a misconception, here. Please let me clear it up.All North American 120 volt PurePower models including the 1500, 2000 and 3000, are available either from stock or with no more than a one week ship date and have been throu...
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[quote user="ricksmet"]PurePower, www.purepoweraps.com, just updated their site and have some interesting videos on the new PurePower+ products.[/quote]Yes, thanks, ricksmet, it does sound “updated”. I am not sure that the better box shall have as mu...
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I am sorry that Steve is unhappy with the inability of PurePower tech support to resolve his phono hum. It is not because we did not provide adequate support. We brought the unit back to our plant and gave it as thorough a series of QC tests as possi...
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[quote user="miab"]In my unit there is definately a change in sound running from wall from early in the day to late evening. In the late evening being the better. Before the Purepower this was much more noticeable but to quantify it, the worse da...
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I am not sure how much time I will have coming week to experiment with audio but if I do then here is what I would like mote have done. This week PurePower will return my second PP2000, presumably fixed. If this new unit sounds identical to my curre...
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I think that it would be informative and interesting to amplify and record the chemical noise of different types of batteries and then place this recorded noise at say +20 dB to the noise floor on a music recording and see how advanced listeners reac...
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Unless they are quite unusual I doubt your amplifier's output stage uses regulated supplies.My point was that PUREPOWER/Inverters, etc. deliver a far more constant AC voltage than the line and that this could be a reason people find them to be usefu...
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[quote user="miab"] Romy, My Bidat being extremely sensitive to incoming electricity and now with Purepower in my mix I am getting to know my Bidat in a new light. I did think I had a grasp of what the Bidat could and couldn't do but feeding it throu...
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[quote user="drdna"] Romy the Cat wrote:This is why I am a bit skeptical
and with big worry hear news that PP did some improvement. Since (at least comparing PP2000 and PP3000+) PurePower is still effective, the one thing we can say is that PurePowe...
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[quote user="rowuk"]What connection do we have considering the spectra of signals on the mains and sound quality? What data do we have on what part of "mains contamination" affects sound quality?.[/quote]No body knows answer of This question and you ...
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N-Set, Happy New Year. I think you are running 230v 50hz in Poland so a lot of comments on this board may not be applicable. I lived in a 50s house in the US at 120v 60hz with terrible electrics (terrible everything really but that is a different sto...
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[quote user="drdna"] 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 doub...
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Yes, "nothing special" is exactly right, and cheap - £500 delivered in the UK. But the point is that there can be very little that is special about such devices, *other* than what these people talk about, which is audible noise from fans and ironware...
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I would say that this is not an answer to the question. It does not really matter what the problem was with the PP2000+ unit in question. This is an irrelevant conclusion that seeks to divert attention from the primary issue. What is important is the...
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[quote user="Paul S"]Romy, I have noticed the same thing with the phono stage power supplies, that the big multi-chassis units with dual 100 lb. PS get no overall sonic advantage, all said and done. So how do we deal with the stupid, lousy AC that is...
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Simply beyond any criticism. The Purepower bass was something that sold me on the very first unit in June 2007. The very first Purepower 1050 had the same type of bass. What kind bass? Well, if juts did not “improve” it and did not modified it ...
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[quote user="miab"]In my unit there is definately a change in sound running from wall from early in the day to late evening. In the late evening being the better. Before the Purepower this was much more noticeable but to quantify it, the worse day wi...
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[quote user="Romy the Cat"] Furthermore today to insult the injury it look like my theory about the PP2000 “transparency” to input noise blew in my face as today the wall electricity sounded much better than the from PP2000, that is what I did – disc...
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[quote user="Romy the Cat"]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 p...
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It is always entertaining to see a story about PurePower. I say simply that Richard should make good on the refund as quickly as possible.I am always surprised to hear about customers who are surprised about this sort of thing happening with audiophi...
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[quote user="PurePower"]Hi Max,If you have buzzing that is audible outside the PurePower case, or audible from a listening position, the behavior is not normal. The probable source is a capacitor. Caps can hum in the same way as transformers - the fo...
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In late December hifigirlgeek reported an error
message on the display of her PurePower+ that indicated our diagnostic system
had detected an overtemp reading, which caused the PurePower unit to go into protective shut down.
...
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Spend a few hour last night and have all the things connected and laid out in the way how I think would be “properly”. It turned out to be noise and elegant. I changed the location of the components to make the shorter paths for power cables and for ...
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The PP2000, eventually(!!!!), demonstrated something that I was looking for long time. Years after year I read and listen comments of different audio people when they describe benefits of different power treatment devises and year after year th...
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I separated my two of my PP2000 in my rack with 3 feet space and run everything from one PP2000 and both Milq power amps from another PP2000. I also routed the incoming power cords that that are far from each other and far from outcoming power co...
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