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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="son"]Its very clear right know,so i decide to build with 12,6v in series….[/quote] Son, when I proposed the series configuration I thought that you have already have an amp and would like to convert it to single plate configuration. Howe...
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Yup i think i will use ac for filament,in my mind i wan't to copy and build the structure of melquiades ,so i don't need to recalculate anythink,only follow the stream, but maybe if i use 6,3v filament(i see melquiades use 12,6v) i must change someth...
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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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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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I always was “concerned” about those large high voltage triodes: 211, 845, GM70…. They kind of different… The 845 always was brutal and not elegant, 210 was elegant but not sophisticated, and the GM70 was sophisticated enough but no one build a...
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Be careful to relieve me if I am not impressed, many promised no one excelled. :-)
Chris, I do not think that you will see me to think about transformers for other channels. I do not think that what I do will be some kind of resolution for Amor...
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It is it, I eventual got what I was striving for a while and now my MF DHT channel is done and the most important is that it now sounds exactly how I need it to sound. The new 25:1 loading turned out to be the key. It is “fast” enough and I did n...
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There is also something to be said for continuity, so one does not wind up with a lot of "optimized" parts. I wonder whether having a different tube "signature" for each "channel"/driver would work out. It's been a while since I multi-amp...
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That's very interesting. Looking at the Melquiades i've always wondered about a few things. If you don't mind, i will ask you about them:1. If you think gas regulators make sound of 6E5P so nice, didn't you try putting gas regulator tube in the grid ...
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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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I like to use different sources and kinds of music for sound evaluations. For instance, I might use some interesting, well-recorded jazz, then move up to something more complex, as you have done. The jazz tells me some things pretty ...
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Well, I never seen it happens but who know – that might be if some use “violence” on tubes. The sad part is that to replace these sockets is difficult. I have replaced in ML2 the 6C33C sockets in ML2 - it was easy but the 5651 are PC board-mounted an...
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Paul-I only replaced the big 7 pin 6c33c sockets. If there was an easy way to access the small tube sockets I might consider doing the work while the amp is open. But my motivation is low - they haven't been a problem. that's got
to be a relief!Y...
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Actually those fantasies may come true one day...I may be wrong, but I thinkthe tube-speaker interface is more important than sticking to 2 stage topology?2 stage => high-mu output tube => high Rp, low controll over the array.But, if you insist...
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I am familiar with the fresh 6C33C behavior, and I do set bias much lower while burning them in. This set of tubes has been installed for about 3 months; the amps are operating about 45 hours a week. Before switching them on the next time, I'll t...
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[quote user="cv"]Yes, well - I wasn't really saying much; just a vague hypothesis. There is some tendency for lower Rp tubes, (and somewhat related) tubes with a certain harmonic structure, to sound more romantic, and hence impart that quality to mus...
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[quote user="Romy the Cat"]Anthony, I think you take the right this in a wrong way.
Sure the quality of the coupling caps is important but you truly shall not be worry
about it. Make the amp, get comfortable with it and then change the damn cap.
I...
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That was very interesting post, here are some thoughts of my about it.
[quote user="KOTriode"]Romy, No, the DAC was not set at maximum level (for best sound) while Cyrille listening to the system. It was set at normal volume for the whole sys...
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[quote user="Romy the Cat"]Anthony,
First, your measurements again the “appropriate load resistor” has very little practical meaning. The
drivers is a dynamic system that has impedance not resistance and the impedance
varies with frequency. So...
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[quote user="mark"]with reference to the LL1627a as used in full range application in melq.you mentioned a good choice gapped at 200 ma but i would prefer 300ma but they do not do it.i had k and k check with lundhal and they will do it and at the sam...
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Jessie-There are the current japanese teflon sockets, and vintage american manufactured sockets - I think either should be fine. The pin springs on the OEM pair I replaced had no grip or spring characteristics. When the pin holders are bent, they ...
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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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http://www.sitefile.org/showimage/6/6c33c.htm
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[quote user="Paul S"]So, does anyone know anything about "good" sockets for the ML-2s? I forget when and where I saw some sort of boutique Teflon jobbies that are pretty darned expensive. Maybe DIY Hi-Fi, in Hong Kong? Also, although Teflon is a ...
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With all advantages of DSET with multi-ways it is a pain in ass to maintain it. For instance now I am chasing for 2-3 weeks a mean thing. Whoever use 6C33C know how the tube dies – it begin to produces from time to time those dry non- harmonic bursts...
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[quote user="Paul S"]Yesterday a nice fellow drove off with "my" Lamm ML2s. Now it is really sinking in: How will will I find anything else this good, along with more power?These amps were like a PhD in sound, what might be done with hi-fi. Yes, I ...
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...to obsess about speaker wire. Thinking about this a little more I realise that my preference for foil cables has always been in relation to speakers with passive crossovers. DSET is much more simple, the amplifier is driving the transducer direc...
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Brad, I heard a KR years ago, only remember it was not the typical "no-feedback sound", which I think of as clear but flaccid and no push. I agree that "feedback" can eventually ruin bass, and more, as I mentioned earlier in connectio...
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[quote user="jessie.dazzle"]Yes, in a way you are correct; the wire is white but over time became sort of brown toward the socket; this is either from the metal contacts of the socket having oxidized in close proximity to the insulation, or simply fr...
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The speakers i've got are JBL studio monitors using a 2420 (118dbwm 16O) on top and a 2231 (93dbwm, 8O) on the bottom, which already accomodate bi amping, though like i mentioned a midrange driver would probably be a good idea and so a six way amp wo...
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