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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="peter foster"] My understanding had been that biasing method is a method of setting up a given tube so it works with the wanted anode current at idle with the wanted anode voltage and these conditions are met by somehow applying a correc...
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Thanks, Chris.
Dima I discussed today many imaginable scenarios. Initially we thought drive a single 6C19P from MF channel of super Milq. But it has some negative consequences… Eventually we decided (it is not final decision but the final with 90% ...
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I do not know if Russians still make them. I do not think they do as they hardly manufacture anything nowadays. I presume that there a large stock of them in Russia as Victor Khomenko (from BAT) told that during the peak of the 6C33C production Russi...
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[quote user="drdna"]I guess you mean the "Arabian" power regenerator you have been working on with Dima? Well, I will wait to hear the results enthusiastically. If it works, I want one too!
The idea of analog dithering opens up a whole new world ...
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Yahoo! I was able eventfully to educate myself how to get out of the “Melquíades” the sound that I needed (using some blood injections from Dima)! Now the project with the “Melquíades” amps is slowly converting from a labor to a pleasure!
“In ...
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[quote user="deemon"]But here we have an interesting question . Imagine two persons - the first man likes classic music and don't likes rock , and the second - likes both . And they tries to make their systems using this concept - "good performa...
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[quote user="Romy the Cat"]I also have some problem with my T85 Multiplex Decoder to read the REL composite signal. The T85’s decoder read Schwarz’s signal perfectly but it is finicky REL’s signal. I did not figure out yet hat is going on.[/quo...
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This thread is a derivation from the thread:
An ultimate transformer within a narrow bandwidth?
Since my Super Milquades is up and running I’m wondering what can I do with the output transformer at HF channel in order to push the envelop of “possi...
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Chris, at this point it is hard to say anything defiantly. Subjectively it sounds like the Super Milq has slightly less HF extension and transient then the regular Milq, although the output transformer of the HF channel of Super Milq runs higher and ...
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Chris,
What I most concern is that my pursuing to fix the HF channel I make myself similar to zillion audio Morons who run across Audio like wounded in the ass animals and keep evaluation components, elements, cables, soldering and defectively of th...
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Those damn Russkies always threw surprises. Using in Melq the Russian-made tubes, probably very few the most remarkable tubes they ever made, the life defiantly threw some hi-fi astonishments.
The people who follow my saga with Melq know that I do n...
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Jim, I did try the anti-phase transformer in the secondary but I felt that it did something to sound. I can not do it on primary as I have the pate coil for the first stage sitting on the same transformer. Regarding the sweet spot of the 6C33C - I ha...
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And email from a site’s visitor:….
“And for my full-range Melquiades, should I still try and build the original version or wait to see result of what you are working on now?”
This is a complicated question about 2-stage Melquiades vs. single-stage...
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Above, talking about APS-like regenerators, I was skeptically referred to the battery back up functionality in the APS PurePower, calling it bogus and completely unnecessary. It was very funny to read at the APS site as the APS guys promote their uni...
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[quote user="hagtech"] The issue I see is that of intermodulation distortion on the biasing of the output tube. It will effectively change HF operating point per supply ripple. Easy to understand if one imagines a gross ripple of 50V.&nbs...
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[quote user="floobydust"] Romy,
As you're planning to run a 6K load, you can run less current without the transfer curve suffering as much. So, another shot at some numbers.... rather than use a RC setup to drop the voltage, Hammond (not my fa...
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I have noted before that the quietly of sound that I’m getting from FM broadcast, or even from the regular FM transmissions of the regular CDs, is insultingly beautiful and not really compatible with Sound that I get out of my CD and LPs.
http://ww...
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A few more very simplistic measurements to extend on my comments. Here is the raw wave from the wall:
Here is the PurePower with 0W load
Here is the PurePower with 50W load
Here is the PurePower with 700W load
The load that I used everywher...
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[quote user="peter foster"]Dear Romy, for your interest re FM (and AM) radio:
http://www.turneraudio.com.au/am-fm-radio-tuner-multiplex-decoder.html
Regards, Peter Foster.[/quote]Thanks Peter.Yep, the decoder in there is a regular switching type. I...
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A few days back I got rid of the 60-year old Germanium glass diodes in the REL detector and put in there the regular 1N4148 4pF low-signal diodes/ it was quite positive improvement. I need to be said that detector diodes are not the regulars diodes b...
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How lucky I am! The Melquiades bass channel at full throttle gives me just enough gain to power my Midbass horn to the reference level of my MF channels. That is truly a very lucky thing. The biggest dilemma I am thinking now is type of the filt...
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[quote user="rafaroxlm"]As you may know the 7788 is a high transconductance pentode which should in theory be able to give higher audio resolution than say 12AX7, 6072 tubes in tube mic pre designs. On search here the 7788 was mention...
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Paul,
Thanks for pitching the Johnson capacitors. They do not look “large enough” for me. I used in past the following caps:
http://www.oselectronics.com/ose_p96.htm
They have very good size to value ratio. The ironic part that I just called to th...
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Here is another question that almost from the DIY-Audio universe. Dima is finishing Zaratustra II amplifiers. It will be quite interesting beast and I’m slowing begin to think about the power supplies – it will be my responsibility. The Zaratust...
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[quote user="Paul S"] Frankly, I am annoyed that I have been unable to grasp your notions of the "X Factor" … [/quote]
Borrow L2 for a weekend and you will be able to see it. I it hard to explain.
[quote user="Paul S"] So then I imagine Milquiades ...
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[quote user="ml8"] If you think gas regulators make sound of 6E5P so nice, didn't you try putting gas regulator tube in the grid of the 6C33C, and why? [/quote]
Sure, I trued. It sounded very bad. I pull out of my butt any imaginable rational with e...
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[quote user="Chirag"] It seems the 6e5p is driving the transformer directly. I've used various versions of even simple mosfet followers to good effect at the headphone level, but never considered using a speaker level transformer. Did you and D...
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A few days back I posted the following post:
http://www.goodsoundclub.com/GetPost.aspx?PostID=8922
…proposing the parties of interest to play along in Milq vs. DHT competition. This interst derives from the following thread:
http://www.goodsoundcl...
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I have written before that Dima is at the finish line with his new power treatment invention.
http://www.romythecat.com/GetPost.aspx?PostID=8522
BTW, Dima’s regenerator has a new name Avicenna Power Device and it is how it will be refered in future...
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Sine I informed public about Melquiades amplifiers I receive many emails from people asking me about the operation points of 6C33C. For whatever reasons people mistakably took me for some kind of 6C33C guru, which is am not. Moreover I could be hardl...
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