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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I always was kind of afraid of it. Any single zillion years tube I see is “NOS in box”, “measured as new” or “never work”. So, I wonder where those uses up old tubes are gone? Do people trash them or juts sell them “as new”. As many old tubes I ever ...
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This is something I've been chewing on for quite some time and finally decidedto make it happen: a serious Stax headphone amplifier.I hope I can use this space as a sort of a blog-report on the progress...if not feel free to remove. I've been "forced...
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[quote user="Bud"]I am about 3 weeks away from supplying 3 Kz ohm to 4,8 & 16 ohm SE outputs for 300b or 2A3 tubes to George Wright, of Wright Sound, and Gary Pimm of Pimm CCS fame (constant current controls to buffer stages from each other ...
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A few things I would like to say in context of Pham’s playback.
I will leave his infatuation with turntables alone – man like to collect turntables and he within his constitutional right to do whatever makes him happy. The problem that I see ...
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To answer the question WRT reliability.
I have built wholly switched mode amps with 2A3, 300B and now a 45.
I
also have a DAC 44...
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Roman,[quote user="Romy the Cat"]May I ask you, this realization of yours… dose it has any “sound”. [/quote]The one we have build which is a little different (6S45 not C3g, also tried WE 417A, 437A, TX-101 Copper not silver, AN UK Line Output Transfo...
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Let's see "series crossovers"... hmmm, very interesting. Something to look into? Where can I get more information? Should I contact an audio tech to design one? Can I send the current crossovers somewhere for evaluation or do I also have send the...
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Which 2A3s and other output tubes have you tried so far, and how do they sound and compare in your amp/system?Also, remember that you may have to tweak operating points a little to get the most out of any of the tubes you try.
I think I mentio...
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Romy, et al, I got rid of my tube tester a few decades ago... yet I still need to match sets of tubes for equipment. When you consider many SE designs with no feedback loops, you need to match "sets" of tubes to get matched performance between ampli...
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Thanks, KM.
I did read a few days again all that you told about the 45 before and have order a two pairs of new (promised) Sylvania from 30s and 40s. From what I tried the Sylvanias never wee bad. I did not try 50sa or 245, perhaps I will. I...
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Romy, I don't think we're in any major disagreement. It's clear you have a good operating point and performance indicates this as well. I did a "normalized" model of this with the 2A3 and 45 and it specs well. All I'm suggesting is that all early an...
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For me the "delta" with the newer Hal-O dampers was in the direction of increased clarity. One example is in vocals, where consonant sounds like "f" and "th" were much more realistic (my "s" and "sh" were already pretty good.) Beyond these typically...
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Alas, not much time to deliver the promised treatise...So, tantalisingly, I will suggest this; for the range 1k up, you would have no problem getting a small mumetal OPT made suitable for the 6C33/S2 combination. Actually, I have something simil...
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[quote user="slack key"]I am interested to find out more information about how DEQX will help solve my issues with getting better soundstage, imaging and depth with the Edgarhorn Titans.[/quote]Marc, finally I have something to say. I also have the E...
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[quote user="Romy the Cat"]The contemporary productions DHT tubes (Russian of Chinese) are superbly firm and have no internal noise when they shacked or hit. The mintage 60 years old tubes what you make the “close to ears” test responses like as some...
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KM,
Yes, it turned out that the B4/B5 sockets are not a problem at all. I do not like the original sockets with springy contacts and I like the contemporary sockets that hold the pins with full micro-tubes.
Regarding the YO186’s price - this is dif...
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Jim,
Do you plan to develop this amp to a commercial product? Is the IT up to the job, or if not, are better ones obtainable?
Paul,
The low distortion may be partly a cancellation effect in the even orders. Even so it looks very clean, almost ...
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Why do you think I bout a 1000 of them and closed to the rest of my life my interest in driver tubes?
Still, the 6E5P should not be measured as a driver but heard as a driver – the beauty in this tube is in its sound.
I do not know why it gave to y...
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[quote user="floobydust"] Been a long time since I've been on the fora... too much real work, too much travel. Still, nice to see this particular thread resurrected. I'm interested to see if you have revisited the 45 since more than a year ago. I sti...
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[quote user="Paul S"]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.[/quote]Absolutely. It wa...
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I assure you that my experience has very little meaning to others as I do not look for “better tube” but look for a tube that would go the best in my specific DSET application and in very custom application of Macondo MF channel. Also, a local gu...
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Romy, I have to admit that there are as many differences in film caps as there are in electrolytic caps. You can find varying opinions for and against both based on brand, type and usage. As noted, large value film caps get (physically) large so you...
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I am not sure what rectifier the 2A3 SET uses. Mine uses the GZ37. The best regarded is usually the Mullard NOS. I have used that for years.
Recently I was on the kick of listening to the vibration of tubes and I came across a dirt cheap tube fr...
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Hi,[quote user="morricab"]Thanks for the info about transformers. It is as I expected, however, that these passive devices are not passive sonically at all. I agree with you that the higher quality of the transformers should lessen the effects ...
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[quote user="Romy the Cat"]The events of the last 3 days are incredibly stupid, incredibly interesting and very educational. During the last few days I have discovered some very interesting phenomena, ok might be no a phenomena but a behavior, th...
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Being both fairly lazy and fairly cheap with respect to audio, I remain very interested in theFR SET/dynamic speaker dream. Also, I am generally both weary and wary of the extreme complexity/difficulty engendered/entailed by othe...
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[quote user="Romy the Cat"]I asked many times of my desire to have the final sparkle in the mid of this PP2000 softness is some kind of audiophile itch. I do not think so and I feel that the performance of my MF channel in context of the “different” ...
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[quote user="cv"]I have some theories...*please* keep this tube safe, we will have to run some curves on it...More importantly, it's a good thing the output transformer wasn't damaged, though I'd imagine the tube would have struggled to pass more...
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[quote user="anthony"] 25 turn
pot in the filament supply. For the life of me I can't source a 25 turn
pot. The 10 turn Bourns 3590 is the closest I can find. Do I need
to keep looking for a more sensitive pot or do you think 10 turn is managea...
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The “Enjoy His Music” published the old celebrated by many DIYers Herb Reichert’s article about his 300B amp ideas.
http://www.enjoythemusic.com/diy/0709/flesh_blood.htm
I read it before but reading it now, after a few years again...
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