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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="Paul S"]Every case of a "dedicated ground" I have seen, including my own, involves only the redundant "ground" wire. The "ground" wire may not be useful for every component, and it can actually introduce noise in some cases.[/quote]Toda...
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Adrian, you have not posted any updates about the unit apart from the hum issues, so I am wondering if the unit remains in your system mostly because you paid so much for it.For instance, have the HF problems you mentioned earlier been resolved? If ...
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[quote user="Romy the Cat"]I got a contact from PurePower this morning and they requested some times to look into what is going on. It was not exactly pleasant that they took my behavior as my personal attack against them – it was absolutely not my i...
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Beachbum, Yes, I am in the same boat. I have absolutely no problems with the sound I get from PP2000 and it is very possible that even if I have any Sonic advances with mechanic regenerations then the practical advantages will be negligible or not w...
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Well, I think the short answer is yes.What the people over at Technical Support have told me is that this is due to the power supply design of the amplifiers that are being driven by the PP2000 and that it seems to be characteristic of certain types ...
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[quote user="PurePower"]Without its own source of power it would be impossible to truly isolate the PurePower output from the incoming utility power. That is why there is no difference in sound when the PurePwoer is on battery or it is on utility sup...
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It was an interning event last night. The sound turned incredibly bad from electricity perspective. I did not have anything like this for a year or so it was very bad and it was clearly electrical. The PP2000 was working fine and the distortions ...
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[quote user="Romy the Cat"]You claim that it was “everything plugged” syndrome but I was writing about it years back and I thought that it was what you were doing. Even if you did not then in my view the superbly positive contribution of PP was still...
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I called to Audience and I spoke with their sales manager.
It was very little that I did not expect and I let him to run his sales pitch. Or course it never intended to be a commercial product, they did it for own home use but it was so good ...
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Romy says: I like when my playback is driven from one single PP2000. I
will make more experiment of course but as now is what I’m witnessing.
This configuration with single PP2000 has a number of Sonic advantages.Boy do I feel validated...
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[quote user="Paul S"] At the same time, I am wondering about what sources you have been using. I mentioned early on that the Jubilee is polite, and I wonder what the Shelter might sound like with the "softer power", just with respect to a capac...
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Steverino, I've asked same question to PurePower who kindly contacted me: If a moving around battery could have caused the issue? Waiting for the answer. My quick visual inspection did not show any obvious irregularities though.
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[quote user="Romy the Cat"]I did detect something not good. Take a look. This is Avicenna in buffering mode, driving 1340W. [/quote]Well, it gave me a chuckle. I will be interested to hear about the listening results, considering I have just bought ...
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[quote user="Romy the Cat"]Is your “noticeable ever-present buzz” coming from loudspeakers (I mean is it acoustic noise) or is it a mechanical noise that coming from regenerator and it comes from your component plagued into the regenerator. In first ...
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Ive been using my PP2000 for over a year now and could not be any happier with the sound of my system. I believe power can get better but at this point the regenerator is the tops. I believe and my ears reaffirm that i am enjoying music like never be...
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The sine wave actually looks quite good no hint of saturation, clipping or wave deformity. Only a single trace, rather than a twisted rope. I suspect that when placed under a load much of the "broken" curve will smooth out. I would also suspect that ...
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[quote user="PurePower"] The overheating she refers to occurred on a small sub board that provides charging current to the battery string. It happens that we made a minor change in location of the board when we started full production that moved it o...
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[quote user="Romy the Cat"]PP has the ultimate tool that allows detecting a LOT about its operation. Do you observe the same behavior as you describe when you pull out the power cord and let the unit to run from internal battery?[/quote]I made experi...
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Ok, Lx, that does makes more sense. Perhaps I misunderstood you as the impression I got from you was that you recognize some instant events through the PP in reaction to events outside of the PP. THAT is imposable in my view. You did well describe no...
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[quote user="manisandher"] …. the PP2000s battery output is clearly superior to its regenerator output… [/quote]
And if it is true then the PurePower people did already fuck up their own product. The battery output and output from AC SHALL BE...
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Bill, thanks for the co-report. 30 seconds is barely a taste.If you decide to put your cash on the line, I hope you will chronicle your PP2000 adventures here, if only to let us see whether APS actually produced a capable, durable unit apart from Ro...
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You might change your mind after you put the PP2000 into the game. Anyhow, I do not know what Bruce did with his Titans tweeter; I do not even remember it they are in time-aligned position. The EdgarHorn Titans uses Fane ST-5022 bullet tweeter. I had...
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I did of cause run an experiment with Metal Diaphragms while the PP2000 was in play, I think I have written about it somewhere. My findings were absolutely the same as yours. ...
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[quote user="PurePower"]We routinely operate our 230 volt models with two phase +/- 120 volt input.[/quote] That's interesting. I use a couple of 5KVA balanced transformers. I tried to feed my 240V PP2000 with one of them, but the output was non-symm...
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[quote user="Romy the Cat"] I plug it for a first time today. It looks like it is sensitive like hell and I did not hear any titanium problems on it even without low pass filter. I do not have infrastructure now to look into it further. [/quote] I ...
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then everyone here will just read, "gullible". However I admit to being totally hypnotized by the Duelund spiel, which I find oddly compelling despite no real, "serious" information apart from the sort mystical, quasi-reverential ...
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[quote user="manisandher"] Also, when I switch from AC to battery, the output voltage (as measured by a true RMS voltmeter) INCREASES by between 3-4V. Now, I am NOT suggesting that this increase in voltage is causing the difference in SQ. However...
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If PurePower successfully reconfigures the PP2000, which looks possible although not certain, 2010 should be categorized as a great year. Else, you made some good forward progress and need to do a deep power dive. As this system will be evolving into...
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I've now been using three of the PP2000 now for 6 months and in that time There have been no further hiccups since one of the fuses went out. They are giving me the best musical enjoyment I've had from my system in 30 years of trying to cure my elect...
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As I said before, in many if not all instances the provisions for “bad electricity” are deeply entrenched into the design of our playbacks. A few days back I took advantages of some new possibilities that PP2000 offered and made some changes in playb...
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