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Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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SOS, please note that your PP 2000 does not isolate one component from another within the reconstituted 60 Hz circuit. It only isolates those components from the noisy and variable wall voltage. Since you think you must isolate your TT and phono stag...
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Voltage sag at the ConEd level is the-same-only-different from porta power sag. If nothing else, at some point, many of us will have a huge "oversupply" feeding the tranny that feeds the nearby drop that feeds our house. No porta unit puts out anyt...
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The original Odyssey PC625 battery I used for my DAC finally crapped out, a couple of months ago. This means it worked when I wanted it to for 12 1/2 years. Not bad, I think, and this even though it mostly just sat there, doing nothing, since I usual...
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Of course we need a definition of "better" before we can say it's better, and I suppose you have that, but it seems to me it is rather a matter of "good enough", whatever that turns out to be. The urge to make a sonic change for its own sake is somet...
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From a technological perspective, these look very interesting. Unfortunately the nearest place i could audition these is Montreal, but it looks to be worth it. Have you heard these, Romy, or are you also impressed with the price/technology ratio?
d...
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I do not know what you are trying to do, why do you need the Lynx card, why is need to be modified and what does it mean “powered individually”, the people looks like sell power supply and they push the notion of individual power but no one said that...
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[quote user="Romy the Cat"]
I do not know, I always have difficulties to talk with audio people about those subjects. They seems to have very strong and very definitive position how different driving tool affect sound of their timbales. The most ...
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Sure, there's plenty APS or any hi-fi component "manufacturer"/seller won't say, and one of the most common misunderstandings they quietly exploit is the die-hard audiophile notion of the "universal component", the old "plug-and-play" gambit.If t...
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It is not a fear of forced ventilation per se, rather a fear of dust permeating the enclosure. You may have noticed that the power supply chassis' have been designed without ventilation holes on the 'roof'...this is to eliminate dust-fall into the i...
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[quote user="N-set"]Anthony, I'm sure you realize that air springs and bearings can only isolate from the structure born vibrations. Placing the tubes so close to the speakers you give them a great chance to catch strong airborne vibrations. Or will ...
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[quote user="Romy the Cat"]Those 3 new units had huge between butteries and AC.[/quote]I don't really want to share my thoughts on the sound of the PP2000 until my dedicated circiut is in place. But I will say that fed from my current utility line, t...
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Yes. Their is a direct correlation between surge current and dielectric materials dielectric constant. The voltages in question are high enough to use a thick dielectric material and just as with the effective resistance of the capacitor, there is a ...
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[quote user="manisandher"] The only advantage I can see really is in the dedicated power supply... possibly. [/quote]
The subject of power supply in computers that run sound is complicated subject and frankly I never heard anyone talk about it...
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On initial installation of my borrowed 1050 i used power cords i have as extras. Did so cause i was still using my BPT for everything but my amps. I had a hum and high pitch buzz from my speakers. Replacing the power cord feeding my amps was the cure...
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The PurePower batteries provide power to the AC regeneration whenever it is required. That could be during a black out, it could be during a brownout, it could be for a fraction of a cycle it could be for 10 minutes. The simple fact is the incoming U...
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It is not about low voltage buttery power, tube version with 200 pounds power supply, CRL filtration, no-transformer gain or air capacitors. The topology that we might or might not admit to comply with the concept of “acceptable phonostage” is co...
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Romy, you mentioned the output separately and John Wright also puts great emphasis on what he calls the "analog" part of the DAC. I haven't even taken the cover off the thing yet, but the way the power supply is implemented is so simple, i...
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Romy Hi, Raplh uses a 300b push pull, but the power supplies are massive, parts alone 15K Euros, each channel has a separate supply, the pre-amp again two massive power supplies , he prefers to use eight of the horn loaded bass bins, although I...
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Man would I love to visit the MIT fleamarket... only a few thou miles away alas.Well, I'm not advocating A2 in any way. The 13E1 will happily run at lower anode voltages but you won't get enough A1 power out, which is a shame cos you'll need a new po...
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I made some power measurement of the Super Milq, to my surprise it is not so much hungry east as I expected. During the startup, what the B+ begins to charge the large capacitors the amp sucks 8,6A. When the amps is fully charge, heated and in it cru...
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Dear Romy,Assuming that your questions are "honest" ones ( I have no reason to believe they are traps, like it happened to me before with a certain Mr. Thor), I will give you "honest" answers, hoping that our dialogue will be of some interest to the ...
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Melquiades condition (both cathodes heated)Plate Voltage 220vBias Voltage -80v (-110v puts the working point in a ridiculous place on the curves I have)Plate current (according to the curves) 165mA approxPower Output 15.5 Watts2nd Harmonic ...
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I mean we can take real live analog music, convert it 100% to digital and get incredible playback if we pay attention to details but we can't take an ANALog 60/50Hz AC signal and clean it up enough for MEGA expensive equipment.Electricity IS a proble...
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Yes, Romy, the pictures of the PP's switch-generated output traces are very different from the direct, clean AC outlet output traces, all right. But this is not the same as a switch mode power supply, since what PP promoters here are talking about i...
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It is even hard to critique because it is beyond of being ignorant of stupid. The John E. Johnson’s review of Lamm L2 preamp in the “Secrets of Home Theater and High Fidelity”. Below are the fragments of the John E. Johnson’s pearls… Each quoted stat...
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All that has been discussed at length many times this board. It seems that people continue to confuse neutral and ground, and I agree that it is confusing. Basically, any commercial "power company" power grid supply in the US will be grounded at a se...
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That's a whole lotta Bidat you've got there, Romy. By contrast, I'm guessing the 1-box iDAT-44+ (not including its wall wart) is smaller than the box pictured above with the torroidal tranny in it. The torroidal tranny inside my...
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(feel free to re/move this post to the electricity thread)As the power supply I'd regard everything from the power generator in the power plant down to the actual load.Why the power transformer should be the cutting line? I do hear your voice clearly...
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(Romy feel free to move this post)[quote user="Paul S"]N-set, I understand you do not mean to hijack the thread with the Axiom, so I actually tried to make generic and/or thread-related observations. I don't know the 6E5P, but generic issues with sp...
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Rowuk,I think that is a good thought. I think power supplies are an afterthought to most audio designers or they think about it in simplistic terms such as bigger is better. I hate to confess this in a public forum but I have found better sonics resu...
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