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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="deemon"]Brian , I never tried SSG cap in phonostage . SSG has a good reputation ..... but I'd prefer teflon for coupling . Mica caps , even good ones like SSG , seems too "bright" for me , but teflon sound pretty neut...
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Hi , Wojtek !Of course , I have some ideas how to modify this tuner , but before doing it you need to check if it operates correctly ! I mean tubes health , power supply operation , DC voltages on testpoints , LC tanks alignment , etc . You see ...
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Yes , the idea of time delay machine is completely clear now . I made some experiments with analog and digital parts of the circuit , ewerything OK , and I need to assemble all the parts together , but now I am finishing the new hybrid class A amp - ...
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[quote user="decoud"]I shall try it; do you suggest it as a test of whether or not mating the Milq with the SH50 screws up the sound irredeemably anyway? Rgds, d[/quote] Nope, it has nothing to do with ability or disability of Milq to drive SH50. Mil...
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I have some ZVN0545A mosfets here for exactly that purpose of replacing cathode followers. You may like to try this starting at 2mA (250V supply, 125k biasing resistor). Did you or Dima try Soviet SSG silver-mica for the first coupler? I am using 0.1...
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Do you mean a battery bias , Brian ? We didn't try it because of 1 V bias voltage - I don't know if the battery with this voltage does exist . I know only 1,5 V and 1,2 V cells ...... maybe using some chemical reactions we can obtain 1 V or little le...
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[quote user="deemon"]Hello , Roma ! And what is the name ? I wanna make a label on my unit :-)[/quote]Dima, as the source for my linguistic inspiration I used a book that I know peaty much by hart - of the greatest book even written - the Thomas Man...
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Hi,The tech guy asked for 2800 euros for a monoblock pair, and his project wasn't really the same what Romy and Dima designed, it had some modifications that I wasn't sure wouldn't spoil the results. On the other hand my speakers aren't as sensitive ...
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It looks like my extra capacitance tweak works very well. I have it for 3 weeks and even I do not have the “super electricity days” anymore but I think the general electricity result is more stable. Nowadays my playback runs 2-3 hours each day on wee...
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Well, if I stop to post in this there is does not mean that the problem is not there anymore and with a new few weeks I hope to attack the electricity problem again.
Firstly the new version of APS Pure Power regenerator is coming and they are about ...
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[quote user="drdna"]Well, it gave me a chuckle. I will be interested to hear about the listening results, considering I have just bought a PP2000, which should be here in a few days. Will I have to buy a Avicenna now also? Adrian[/quote]
Adrian, I d...
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Thanks, jk
I have given a lot of thoughts to this topic lately and have a number of conversations with various people about the subject. A friend of mine from Europe, who is currently at fitness protection program, suggested that:
“.. in my "real" ...
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The Melquiades amplifiers practically dally demonstrate so much “interesting” behavior that it is not even funny. My relationship with this amp reminds me that bird for the Montaigne's “An Apologie Of Raymond Sebond”:
“But the tale of the plot is v...
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I am continue to look into Avicenna and trying to resolve a puzzle why when Avicenna is engaged the sound compare to the sound of the “Wall” looses dynamics. I do not compare Avicenna with PP2000 but rather I compare it with the sound of the Wall. Av...
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A year or so ago I published the evolution of building my full range Melquiades amplifier:
http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=2502
Now, I am staring a thread where I will cover the progress of building Dima’s “Zarathustra II” ...
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[quote user="hagtech"] Maybe you can do the same for the bleeder resistors and wiring bundles? That is, once you are sure it is operational. Wires can be like guitar strings. [/quote]
Actually I do some sort of things. What I am done (I’...
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Domidaw, I am not sure if I will be wrong if I say that this amp was first electrical device I build also. so I went over the same problem as you are going. trust me I made a number of ridiculous mistakes as well and so many times I call to peopl...
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Hello Dima !!!!
At point D I have 0.920 mA ... at 198v on pin 4. 238v before resistor R22 and 200v after resistor R22. On pin 5 I have -82. There is 82mV across the R21 resistor. I noticed that when I turn the VR2 potentiometer, thus inc...
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[quote user="Romy the Cat"]I do not feel comfortable what people buy the audio things just based upon my experiences. My experiences with audio are very much not oriented for other, I do audio for myself not for others and I would like not to feel a ...
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Hi Jim ! You wrote about "hysteresis" in the 6C33C curves - it seems to be a very interesting point ! Maybe Romy told you about one fault of this kind of tubes - some old ones have a bad tendency of "thermal breakdown" . I mean positive thermal ...
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[quote user="Telstar"] Because those 20 bit were true 20 bits No, it won't do true 24 bit ladder, according to the specs on their website. Nonetheless it can be good. At least it is sure that it will accept 24/174.6 format. But I I'm pretty sure that...
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Duke, you see, the lowering of output impedance is great but once again “how it was used”. When we hear the result do we hear the effect of a more infinite dumping or we hear the problem that coming with application of feedbacks, or we hear the probl...
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[quote user="Romy the Cat"]Brian, and how do you find your MOSFET behaves compare the 12AX7-based cathode follower?[/quote]Romy, I have yet to try. Only got them on recommendation very recently. They're cheap enough to try in a B9A plug-in without al...
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I kind of less care about Lamm or about his new amps but rather I am interested using the example of ML3 to see what the DHT tubes are capable off. There are some people who worship direct-heated tubes and attribute to them some ventures (like ...
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[quote user="drdna"]Okay, what is that, and where can I hear it? [/quote]I briefly mentioned it in the electricity thread.
http://www.goodsoundclub.com/GetPost.aspx?PostID=8522
and I have been expecting it with a LOT of anxiety. Dima have sen...
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The Avicenna power devise is not operational nowadays, I did screw it up a few months ago, not operationally by other more barbaric way. Anyhow, It is back with Dima now, I am sure he will repair it. For a time being I found another interesting way t...
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[quote user="drdna"] Oh no, after all, you haven't even said anything about how it sounds. I suspect that both the Avicenna and the PP2000 will be equally great. However, since you mentioned Dima was thinking of making this into a commercial product ...
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Yes, it is what it is. I spoke with Dima last night and he passed his view on the subjects. He does not agree that 24 bit really exists in out 24 bit converts. He feels that we get 20-22 bit in the very best cases. He also think that all our 16-bit c...
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The Rohde & Schwarz EU-6201 tuner was made for German Ultrakurzwellen (ultra short waves or FM) Broadcast Network. The idea was to have a chain of wide-bandwidth composite signal receivers that feed re-transmitters. I made an attempt to accommoda...
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[quote user="Romy the Cat"]
I juts got home, put a record to play and suddenly discovered that my SPU has it’s cantilever bent 90 degree and then even twisted vertically. It was perfectly fine last night!!! I have no idea what kind forced what appl...
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