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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Romy, from the anicdotes peppering this forum, it sounds like you have "done your homework" prior to choosing someone to share your life with, and you have done this at a time when you, at least, have already acquired some life experience. No doubt ...
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Dear Romy, regarding your efforts to solve variations in mains power supply, there has been an interesting thread on RAT related to the use of toroids as power transformers that morphed into a discussion about the level of DC offset in mains power su...
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At this point I am absolutely confident the there is difference in Sound between the properly sounding PP2000 that I had before and the “new” version of PP2000. Let juts for sake of illustration I will call it PP2011. The PP2011 is better soundin...
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[quote user="Romy the Cat"]
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 workin...
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Romy, thanks for the info on the chokes in the fullrange Milq.Today I have ordered more Milq parts this time for the power sequencing and bleed down. I decided to go for the relay sequenced bleeders for all four power supplies and figured I would be...
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I designed up a steel chassis for both the Fullrange and DSET Melquiades. Here they are screwed together for the first time. Then I have made sure all the cutting and drilling has been in the correct places by quickly putting the parts in their pla...
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To keep with Romy's spirit of sharing his work, I have attached a file of VER 1.0 of the DSET Power Supply. There are quite a few differences to Romy's published schematics but it is basically the same beast. You will notice a lot of power transfor...
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I have film in that position; I actually meant the 1000uf+ caps in the power supply. Hard to get those in film.... ...
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Rectifier in linear audio systems draw high current at short time for charging psu capacitors.
I = Total peak current of an audio system at full load (current draw from wall AC)V = Voltage of main ACP = Total Power of Audio System = ...
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Rick, as I "remmember", the PP output waveform was a "perfect" squarewave, in terms of shape, but it's pulsed. And I think Romy said it worked with a load of up to 60% of "capacity". Does a different regenerator have to "work the same" to "sound as g...
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I have a long story about battery output and life not coming close to manufacturer's promises, but I will not tell it. Suffice to say, it may well be that you have a defective battery, as it happens all the time; or, it may be that your batteries do...
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What would I do if I move to a much larger room and the power of Milq’s full 6C33C would not be enough? Surely it would be possible to go for transmission tubes but they all high plate impedance and high voltage. If I parallel all my bass drivers and...
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[quote user="hagtech"] I did bandwidth measurements at 1W. …. I should plot both 1W and 6W bandwidth responses. [/quote]
I always feel strangely disturbed when I see people specify SET response from 2Hz to 150kHz. Here is a practice out ...
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[quote user="Romy the Cat"]BTW, the idea of analog dithering (randomanization) will be used in the coming Avicena Power Generator… [/quote]Okay, what is that, and where can I hear it?
Adrian...
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There was a cool Russian-made tube GU-48. It is high-gain, high power pure direct heated triode with 300W on plate and 10A on carbonized tungsten cathode. I did not hear but it looks like something in the class of RCA 833 tubes. I think Japanese sel...
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I keep thinking about power and how much extra power and gain I would need in a new room, Sure, it is not difficult to raise a white flag and do for SS amplification but I so would like to stay with SET amplification for my bass channels! I am lo...
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Nice job, KOT, and nice trace near clipping! It's always good to see a full, symetrical wave. Did you say you did or did not connect the halves of the 6C33C? Of course I ask because of the power you cite at clipping... Please remind me, what is t...
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After more than 20 years of playing audio game I think only two things are real game changers. DPOLS and Good AC qualityI do not claim I listened to Wilson Speaker in DPOLS but I am sure it was near DPOLS 14 years ago. I remember for the first time...
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Amir, I told of my own approach to wall power in other threads. Basically, I tried to make my gear as tolerant of AC variations as I could without simply smoothing everything over. My DAC runs on battery power. I modified the power supply and changed...
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Please, have some fun. First download the white paper to see what the patent artists came up with. It is essentially correct but not to scale.
Note that it requires 18 offset sets of blocks around the periphery of a cone. About two degrees of space ...
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ya that’s likely where the truth goes. I had it once with electrostatics. Theyre most bitchy in regards of correct positioning in the room as we all know. They’re a lifetime task to find DPOLS. I tried to move around and found huge difference. Some c...
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[quote user="Michaelz"]Does this mean one may one day get free power from the neighbors?[/quote]Well, I think it means much more tight dependency from the grid, much more complexity for grid decoupling, not to mention a much higher cancer rate… I wou...
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[quote user="Romy the Cat"]If you consider APS PurePower as just a power treating or regenerating devise then I feel that the whole “kinky” point of this devise might be missed. We get horrible sound with bad electricity and we are accusto...
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Dear Romy,The UPS units are being used in their normal way, as line interactive. The voltage waveform supplied by the Powerware 5115 is a sine wave. This is described briefly in the manual and was important information for me pre-pur...
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Peter, I wish I had more confidence in the amp's power supply as significant proof against the full range of AC power nasties. In fact, I have long had the sense that there is such a thing as "over-regulation" where hi-fi power suppli...
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Hi Romy,
I haven't read this entire huge thread, so pardon my intrusion. I was wondering if you have tried to regenerate 120v by turning a motor by the shaft of another motor. We use that little trick in the commercial electric industry to generat...
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[quote user="Romy the Cat"]I did not say how my saga with APS Pure Power regenerator finish but it never finished. Since the end of the last year the regenerators is sitting in my closet and I have sent the unit’s main board to APS people for the “re...
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In addition to Peter Foster's idea, you might find someone who knows about electron microscopes. I know almost nothing about them but would imagine that power would be critical to their performance. I think Xiaowei Zhuang is the ramrod ar...
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Back then, if the people in the "cheap seats" could not hear everything clearly, they might add old veggies to their catcalls! "Reinforcement"??? And we expect hi-fi to "reproduce" this!?!On the one hi-fi hand, this is another great reason for mult...
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Hi,[quote user="Genn"]May be it is time to review some basic concepts?[/quote]I am quite familiar with them, thank you.[quote]I'm using today IC based, Accu powered small amplifier, and it reproduces music, without any noise and distorsion from angry...
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