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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="drdna"]Since both sides use different amplifiers, I think there may be incomplete correlation between the two sides in terms of coincidence of frequency response. Small changes in frequency response that vary with frequency and ampli...
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[quote user="Romy the Cat"]Bidat, for whatever reason is remarkably sensitive to electricity, probably it is more sensitive than any other my priced of equipment. What however is ugly is that during different time, during the different problem with e...
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Here is the signal box:The design is double mono past the VR's. Including the bias.
The coupling caps are Arcotronics KP172 from RS-Online, quite prised by Thorsten Loesch. THey are sitting on
sorbothane pads. The air caps are: 1) 365pF some +/- s...
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I was contemplating the 6 Channel Super Melquiades conversion – it will quite a revision – and I am slowly inclining to make it not 6 Channel but 7 channels…Anyhow, the post will not be about the needs of extra 7th channel but rather about one of the...
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[quote user="Axel"] I hope I got this right when going through this long thread with LOTS of information. Did you mention for upper-bass cross-overs Elko’s (electrolytic) only to be your preference? If I have it right, any special preference at a...
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Here is another, simplified assault after some rethink and PSUD simulations.Rectifier: 3x1.2kV SiC per phase should do the job, actually 2 would do, but I'd preferto be safe. Bridge I don't want, as there would be 6 not 3 diodes switching1750V. 1.2kV...
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[quote user="Romy the Cat"]The alignment, tuning and changes will be done very soon and then the sound of the both: virgin Sansui TU-X1 and the updated will be compared. I am very interested to hear the result. [/quote] I got my second Experimental S...
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OK, now I recognize my S2 driver, thank God.
I was give to my new PS for MF channel one more change today to show itself off. I relayed the Hartmann ‘s first movement of the Shostakovich First Violin Concerto. As I said above the progress was very n...
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[quote user="drdna"] Honestly for now, the character of the tuner is unobtrusive enough that I notice mostly the problems I have with the preamplifier and the electricity. However, I would be interested about what you had thought at this point to be ...
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I have expressed this attitude before and I think it bites me by my tail again. Everyone tells that electrolytic in POS are bad. Well, I kind of follow this thinking as well but up to the point. The true is that I never was able to beat actively ...
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If I say that it was horrible with San Audio 2A3 driven with buttery biased 6E5P then I really meant it. I got home today tune it on and it was so bad that decided that it shell not use it as is. Even though it an experimental amps but still it...
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Wow, it is worth to live in Boston and have a day of miserable rain.
I really like what I was getting with CD and I have a few very interesting results coming that should be even more exiting, at least one of them is more defiantly is very exciting ...
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I spent a bigger part of day today to finish the “End of Life" Phonostage, there were many things to do but it is now over. Done! Complete! Amen! I it closed up and sat in it’s permanent place.
A few observations looking back. First, I spent a LOT...
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[quote user="Antonio J."] - Regarding C2 the 2000uF/450v cap, he suggests to replace it with 5 x 200uF/200V by Mundorf (he can get them for a good price, probably better those five caps than a single 2000/450). I'm not sure about this replacement, it...
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[quote user="peter foster"] By "dynamic viscosity" do you mean the reluctance of an amplifier to be dynamic, i.e., the degree to which an amplifier sounds like it is bogged down, usually as a result of a poor rise time on transients, i.e., poor HF re...
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[quote user="Romy the Cat"]I was thinking about this: how come that driving 6C33C (in fact driving anything one can imagine) the 6E5P was very fine but driving 2A3 it was dull like hell. I opened the amp and tested all – everything was perfect but th...
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Dear Romy,
I have been reading the threads on GoodSoundClub about your journey with development of the Melquiades and Super Melquiades amplifiers. They are very interesting to me. I am pleased that your purpose was to produce a particula...
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