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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="cv"]...yes, I remember. I wonder if it's due to the large (and varying with signal) capacitance of the 6C33 input interacting with the small coupling cap. Hopefully this will be less of an issue with the 6e5p/6p.[/quote]Chris,
It is cer...
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Here is the general specification for the parts that I used. The selection of the parts implies some liberty of course. It will be your amp after all, not mine - do whatever you wish. In some case when I feel that requirement is critical I will stres...
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I think it should be somewhere posted for my and perhaps for others future references. Here is the setting for testing Melquiades' single-stage tubes on Hickok 580/580A tube testers. To test the tube as a driver for a full Milq (two stages) set ...
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Hi Romy,Agreed about the S2 transformer being the most prominent it is here I think that mumetal will shine. I should have said that I was referring to the upper S2 covering 1k-12k or so. I wasn't too clear earlier - when I suggested rolling of...
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[quote user="el`Ol"]Why not more semi-active speakers with high-sensitivity mid/treble and transistor-powered bass? [/quote]… and it is very important do not overlook this difference. Multiamping is fine but is it severely suffer in case of different...
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I received a comment form people who reportedly well-familiar with using the high-frequency high gain tubes. They suggested me that the resistor between screen and grid (R23) might be eliminated and that would bring some benefits. It very much might ...
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We all know how low-power SETs sound driving low-sensitively ported speakers. The Morons feel that it they have “enough volume” then their SET is good to go. Of course it is not the case and low-power SETs shell not driver dead speakers.
However, I ...
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Sure I was not able to do not listen it as the pain dried. It was incredible ad-hog sting of the drivers. All woofers are series. I know, I know but they are 4R each and I wanted to drive it with 2A3 just for the first test. The post is tuned - I hav...
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This idea keeps to fascinate me.
http://www.goodsoundclub.com/GetPost.aspx?PostID=4063
and I really would like to try and to see what might happen. I’ have decided of move this task on my levels of priorities as something that I wo...
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I do not think that 6e5p driver stage withh ss could be useful for proper playback. or would it somehow be melq.
I am familiar with the proven method. in the case of melq it should be followed 100% exactly. I am very greatfull for ...
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[quote user="cv"] Consider a triode connected 13E1. 95W dissipation, will probably work beautifully with the existing OPT if you adjust the gap down and if you can rewire your arrays to present a somewhat higher impedance.Something like 400V-450V / 2...
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Romy, I'm of course familar with your MF design and Jim's 6E5P curves is what I base my considerations on at this moment (along with the corresponding Spice model).Your DHT MF is quite self-balancing due to the large cathode resistor. WhatI have in m...
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Nope, the Russian tubes generally much, in fact much worse than western equivalents. There were however some exceptions. Those options were due to various reasons. The tubes like GM70, YO186, 1P24B, 6E5P, 6N30P, BO188, GM57, UB180, 6C33C, 6N6P, M...
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[quote user="nl"] Gordon Rankin of Wavelength Audio did a series of one-stage DHTs with a step-up transformer input about ten years ago. I think they were called the Mercury series. By all accounts, they sounded good, but of course had limited gain, ...
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But here it is. I made this monoblock fit into less than a square foot. It is tight. I use Hammond iron throughout. Their stuff usually works pretty good for power supplies. I have some photos at my blog. [img]http...
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I got a forwarded email today containing the Lamm Industry’s release notes about their new SET amplifiers.
http://www.GoodSoundClub.com/PDF/LammML3.pdf The good thing in this is that Vladimir is still Vladimir and he did changed since the Rich ...
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I was thinking about the subject for a long time. People in audio love to make generalization, so do I, but in it is not so simple. People attribute to output tubes some “special” qualities but I more interested not about unnecessary drooling about A...
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I remember I had an Asian girlfriend who was viciously trying to convince me that I was the best man in the world. She was 23 and I, listening her, was experiencing the incredible boredom...
Anyhow, Keith, although I am not a big fun of Alpha-type o...
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Well, any tube might be full range, the question about implementation,
power and objectives. I do not know what specifically this fellow does and what
he wants to drive with it. My experiments with single-stage 6e5p were not so
promising. He has d...
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Anthony and Romy, thanks for taking the time to respond to my question. I want to take on this project as a learning experience both in terms of simply building an amplifier from a schematic and for my edification on sound reproduction.
I’m starti...
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If one dht is good, two must be better?
I don't know. Some people like combining 6C45 etc with DHT, supposedly mixing the appealing qualities of each. Other people find that using a 6C45 (or other high-gm tube) with a 300B just makes a 300B sound...
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I do not know why people go into low-sensitive loudspeaker and they go crazy in order push the last drop out of the class A2 operation. From a different perspective the Macondo’s woofer towers with 97.5dB sensitivity are low low-sensitive loudspeaker...
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I have been contemplating for a week if I need to drain the power caps in my new revision of my power amp. The benefits to live the voltage in there is the cap continue formatting what the amp of off and it minimize the need to break-in or to train t...
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CV, Good scenario as well but my leading idea is slightly different. I would like to keep any reactance from the path, would it be inductive of capacitive, to assure ultra fast response time. Basically I would like to maintain the MF amp as it used ...
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This post is a continuation of my late desiccation with Chris from:
http://www.GoodSoundClub.com/TreeItem.aspx?PostID=9641
David Slagle have made the OPT for YO186
http://www.intactaudio.com/forum/viewtopic.php?p=3560
Ideally I would like to try ...
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[quote user="be"]Could you tell a bit about how does this:
"I end up with 360V on B+, 15K plate load, grounded cathode, 160V on plate and -3.5V on grid via a series battery."
sound as compared to the normal Milq bias?[/quote]
I did the following. ...
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[quote user="N-set"]Risking that the topic has already been discussed and that I postin a wrong category (Romy feel free to (re)move this post:Is there any sense in trying 6C33 at higher volatges and lower currents?More precisely, I've been wondering...
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[quote user="Romy the Cat"]It is unquestionably an ambiguous project. The topmost question that I would ask myself after this project would be the following: can Milq-biased 6E5P to be as good (sound-wise) DC driver as some vintage direct heated tube...
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Actually I care less about the design philosophy in this case but rather about the result. Obviously the 150W-200W (200W?) of Zarathustra’s pure class A would be completely useless for my horns. I would like to have something to drive with that amp a...
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[quote user="Paul S"] I really would not know where to start with most of the crap out there, since most commercial SS sounds like it makes "music" by inhaling it. But I've heard "acceptable" units from those listed, albeit in some poor environ...
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