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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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[quote user="Paul S"]Lamm did choose to use some of the driving ideas from his proven SET amp…[/quote]Yes and no. ML3 design wise, as I understand is, in fact is not as interesting amp and it might be otherwise. Vladimir went for the target marke...
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[quote user="Gregm"]It doesn't seem prudent to look at the speaker without considering the amplifier at all. We would be designing a speaker that would work with a theoretical amp -- but not one that's available.[/quote]
You are right but the opposi...
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The strangest (and most disappointing) thing I noticed is that this "review" is so threadbare that it pretty much boils down to a "testimonial". Could he have taken an easier path? Surely, along with calling the 2.2 "a worthy successor to the 2.0 a...
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Why use the GM70 apart from its power potential? For one thing, it seems to require literally lethal voltages to become remotely listenable. Is it really "that" linear, to insist on it?But my experience with GM70 is quite imited. I ...
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Romy says:[quote]The problem is that in context of those amplifiers the COST BECOMES THE MAJOR DESIGN IMPEDIMENT[/quote]Yes, but it shouldn't -- should it?Let's be reasonable (a tall order). Either a designer knows how to design or not. If he doesn;t...
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[quote user="KOTriode"]Romy,The normal bias for the Golden Grid tube for 200V Plate at 200ma is about 70V-80V for the good tubes, the bad tube read 0ma at this bias, when drop to -30V it start reading some current, but can't get to 150-200ma current ...
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… I do not consider it as an interesting driver and I have a good feeling that you will review your desire to drive 2A3 with 7788. 7788 is phenomenal for different application (ultra low noise + ultra high Mu) not for driving power triodes. Jim, if y...
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About a year ago I've take an interview of V.Lamm, and he mentioned his plans to release GM70-based amp. May be it is already on the market. Roman, could you descride your own observations regarding the Sound of Soviet tubes. ...
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Not quite on topic but perhaps this deserves to be here:http://www.theaudiophile.net/threads/762-Lyrita-s-new-Mono-amps-and-DHT-Preamp?p=7735#post7735It appears to be a simple two stage SE design with the 6e5p coupled to the GM70 via an interstage tr...
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N-set, yes, I did not have any single 6E5P or 6E6P filed on me since it was accepted to operation. About your circuit – you need to talk perhaps with Dima or with others about it. I am absolutely not familiar with PP amps, I do not even understand ho...
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[quote user="jessie.dazzle"] I don't have a problem with what Lamm has done in offering the ML3 (ignoring the price)... If I have a problem it is more related to how the product is being represented. Representations aside, depending on how it sounds,...
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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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Romy,The normal bias for the Golden Grid tube for 200V Plate at 200ma is about 70V-80V for the good tubes, the bad tube read 0ma at this bias, when drop to -30V it start reading some current, but can't get to 150-200ma current for the SE amplifier.Th...
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Thank you, Romy. I suppose to the notion of generic optimization is an oxymoron: like talking about an off-the-peg bespoke suit. It is either Savile Row or it isn't.What would be desirable, however, is not to have to do it all oneself: where do...
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Lamm has been talking about his GM70-based amp for many years, buttering the subscribing to his speeches public. I do not know what the status in there but I would not expect anything relatively interesting. There are many objective reasons why I do ...
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MSA, I have heard the McCauley 6174s, and I would own them if they weren't so expensive. But they still want a lot of power, because of the big motors and the exponential thing, and the size and nature of the space we are talking about.As you know, ...
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[quote
user="Iraschwips"] Could the circuit be modified to accept a higher
powered Directly Heated Triode like a GM70 tube? [/quote]
Yes, there are version of Milq
out there where the same front-end in SRPP configuration
runs GM70. First of...
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Ok, let dive a little bit further into my examination of the subject of Lamm ML3
What is important is to undusted that my view less targets the Lamm ML3 but rather it targets the ML3 as a representative of entire class of amplifiers. When I to...
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It is impossible to make two amp with the same quality with such big difference in output tubes , the transformer design are vastly different, a 10Kohm transformer would never have a good bandwidth as a 600ohm transformer. I just have to experime...
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[quote user="Romy the Cat"] I do not know what fantasies Tom Martin and Robert Harley had but it looks to me that Magico Ultimate II is very much the same as Magico Ultimate I, the prefix II mean a new round of marketing BS… Here are the picture...
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[quote user="Romy the Cat"]Ok, let dive a little bit further into my examination of the subject of Lamm ML3
What is important is to undusted that my view less targets the Lamm ML3 but rather it targets the ML3 as a representative of entire cla...
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This whole 833 A2 concept, given the constraints,is a no go. When driven positive, the grid equivalent resistance drops down to 1/transconductance level. For 833, being a high-gm tube,this can be as low as 100R. In order not to distort significantly ...
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[quote user="Paul S"]Yes, we are all adults here, but I hope and pray that readers just following along and dreaming about "ultimate" systems will not take it upon themselves to actually try any of this stuff at home! Be advised, all, that the volta...
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Lamm juts announced the “Wold Premier of Lamm ML3 Signature single-ended triode moonoblocks” at CES 2008. It will be paired with large Wilsons in 2500sq feet room. To drive 95dB sensitive speaker with 32W in 2500sq feet is a sizable task but it will ...
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I regularly visit 6moons News Section that lately became quite good sources for audio news. It is same that Srajan not willing to share the news in RSS or compatible format, anyhow…
The today new is Elina Lamm announces that "we are extremely please...
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A few years back an editor of a “famous” audio publication asked me if I write for him. I explained to him that I have no interest to build my own audio clientele, that have no cronies manufacturers whose products I would like to promote, that I ...
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[quote user="Paul S"] Given speakers that can be driven dynamically by single stage amplification, there remain a host of issues, and among those issues is color. Most compression drivers are color-challenged to begin with…[/quote]
I would agr...
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I got surprising amount of emails form visitors of my site asking is I will be going to CES-2008. Nope, I am not. My days and interests with CES are over, I closed down that show and I hope the rest of the industry would follow me on it. In fact I ha...
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Yes, the GM70 is very much unknown to most of us, especially in its "pushed"/HV version, and it is not likely to be properly explored by the average DIYer, either. Lamm did choose to use some of the driving ideas from his proven SET amp, but it ...
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