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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Well,
I have to tell you, Meiko41 that I was pleased to see that a local guy got a new PP2000. I kind of on the verge to get another PP2000 and this was a good preview what newest state of the PP2000 is. Even it was very clear the with PP2000...
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It's my system that Romy discussed above. I've been fighting electricity problems for 25 years using everything from home generators to multiple 3 KV isolation transformers in series with banks of caps, to multi mega-buck high end audio products to l...
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Will do if I can get a review sample.
Bill
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Have a hum through my center channel speaker, the SET amp of which sits directly in front of the pp200 about a foot away. It is not relaTED to the DC offset of the 2000 as adjusting that does nothing to the hum, and running the amp from the wall rat...
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It's not a grounding problem, but purely 60 HZ RF coming off the 2000. And it's only one amp that seems to be affected as a second SET on top of that one doesn't produce the hum. Of course that could be because it's a tweeter amp working above 9000HZ...
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Which bring another interesting subject – will the PP2000 be able to handle properly grounds if there are two PP2000 handle in the same system. Bill what to run him SS monster from isolated PP2000. What I install my playback and will have essentials ...
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I would place my bet on common mode noise being carried on the safety ground long before blaming RFThe ground on the amp has been tried both lifted and present. I have reversed the AC cord using a cheater plug without effect. I have tried grounding t...
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This is Romy's unit that he let me borrow.It does produce the cleanest electricvity I've heard in my system in over 30 years of trying.A new find last night: The one amp with the problem power supply transformer is buzzing at the same frequency as th...
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[quote user="Romy the Cat"] I know that this post will be lost in the jungles of my site and I am OK with it. Those who follow my site regularly will have a chance to read it not to mention that for me a message is not what heard by other what I ...
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[quote user="drdna"] It is not exactly correct. There is 60 Hz hum eliminated by lifting the ground to the amplifiers. The neutral is connected to the ground prong and chassis in the amps, so I assume it is setting up a loop. However, there is a seco...
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The Purepower state at their site that efficiency of the unit is 89-92% depending on load. I presume that they meant the power factor correction that need to be taking to the consideration. In my case my two 6-ch Melquiades run from two new PP2000. M...
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I got today my second PP2000. This was the worst sounding unit, the one that I used for over 2 year, was fine then was upgraded to the new version and lost it sound. The first fix of the upgraded unit was not successful but this last one looks like m...
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I was wondering what is coming out from PP2000 that makes one unit affect another. It might be radio and magnetic stray fields. Last night I took my gauss meter and was sniffing all around my PurePower regenerators. I was not able to see any signific...
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I do not know folks, I never was happy with isolation transformers. Perhaps I did not have the right isolation transformers but what I had was not good enough. Perhaps we have different electricity problem in my and your countries…. Whatever I had ma...
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[quote user="Romy the Cat"] Probably the whole thread about the evil electricity might be coming to it’s logical end…[/quote]Today turned the playback and I was surprise with gray and unexpressive bass. “What the hell?”- I asked myself. There wa...
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[quote user="Paul S"]Truly desperate scofflaws might find themselves so annoyed by the hum that they lift the PP2000 AC ground connection at the PP2000 chassis and run that unit's ground only to a dedicated ground (with a lower impedance, of course),...
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This is very interesting subject that gave me a lot of head ache until I figured the things out.
It is known that I have aversion to ground that comes with mains. It is very dirty, so a few years back I drove 15 feet copper poll in pretreated backya...
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Since I go the new version of PP2000 two weeks back I was operating under presumption that they will be sonically similar tothe PP2000 that I have had. I did not invest time or efforts to confirm this presumption partially because at that time I was ...
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I would like to shade light about what is doing on with PurePower PP2000. I know that the readers of my site have own brain, at least some of them, and they do not need me or anybody else to “shade light” on anything. Still, since I was the initi...
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Yesterday I spoke with PurePower folks and they are looking into what might be the problem. They do have a log of all changes were made and I hope we will be able to find which one did the damage. There was however very interesting development. Last...
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[quote user="Romy the Cat"]First of all I feel that PP2000 is slightly “released” some HF.[/quote] The reported “softness” of PP2000 came with some HF roll off. I drive my MF amps much harder while I use PP2000 and it was a good help but still there ...
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Every day that I listen to my system, I thank God for Romy's perseverance with the pp2000. For the past 25 years I've fought the crappy electricity that comes to my house in the woods with everything from banks of 8 massive 2 and 3 KVA isolation tran...
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[quote user="scooter"] Indeed, this is a reference to how important electricity might be. After last night, I almost feel as though my equipment is a much less important factor and takes a backseat to everything else. At this stage, I am thinking...
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[quote user="manisandher"] I'm assuming when you talk about the PP2000 here, you mean in AC regenerator mode. So what about in battery mode? Is it 100%, i.e. totally equivalent to "super electricity days" in your estimation?The reason I'm asking is b...
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A few post above Bill mentioned that he run his PP2000 from AdeptResponse power conditioner. I am not familiar if AdeptResponse helps to separate one PP2000 effect another. I am not also familiar with AdeptResponse itself. Looking it up it appears t...
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[quote user="Romy the Cat"] When I have my old transformer 11:1 then I had the midbass horns calibrated so perfectly that you can tune a large symphonic orchestra by it sound. It was spectacularly stop-on setting with any type of music if played it n...
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Paul, I'm happy to compare the new PP+3000 to my old PP2000 and share my findings. The new unit has arrived in the UK from Canada and should be at my place this Friday.It's true, I didn't particularly like the sound of the PP2000 running from its reg...
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[quote user="Romy the Cat"]From what you describe I conclude that you have ground loops regardless of the PPs and the PP juts highlights the problem.[/quote]This may well be the case. I can't even remember the exact components I was using last year (...
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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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[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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