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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Romy, setting aside for now the issues of loading, the observations about color seem at this point appear to be as much about 300B as they are about DHT. As near as I can tell, people who like the 300B's color-capability either like or do not h...
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I agree that it is difficult to extract the color of the DHT from the 300B and indeed from the circuit used in this experiment. It would be good also to listen to some IDHT 300B amplifier.
However, there is something to be said for the certain ...
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[quote user="hagtech"]Hey, I never thought of this. You can run 1/2 the tube at a time! This actually puts it within the limits of the VacuTrace. I can test each side separately.[/quote]
..and while you do so you might discover one...
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[quote user="Gregm"]Actually, that could be a viable commercial product: a "stereo am"p allowing for four channels. One hi side, one low side, per channel.Any moron purchasing this could be stratosphrically happy flabbergasting his pals by "passively...
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Thank you Romy! Actually I've realized that when I wrote it I rather ment dynamical stability then frying the outputs. But in proper PP the even order harmonics are strongly surpressed, sothere should be no or very little change of the output OP due ...
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[quote user="Romy the Cat"]BTW, I have a local Bostonian guy have replied brought today a very interesting DHT amp. He has a number of DHTs and this one he reports is the special one, quite expensive as well. Although the electricity was not good tod...
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I looked at the schematic for Herb's 300B SET many years ago. It's been copied and slightly modified by many.... personally, I would not use it for a 300B amp... then again I probably wouldn't use it for a 2A3 or 45 either (I think my input/driver d...
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I have to tell you something: I do not believe to audio people. Whatever they say has some freakish twist of desire to present the sings in a certain way instead of witnessing and experiencing the thighs as they are. This is one of the reasons why I ...
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Hello every body, I live in France and I'm new on this forum.I'm thinking to build (some months) a mono big Single Ended amplifier (200-300 watts) made with triodes (IDHT or DHT doesn't matter for me) for outdoor professional audio.Have you got an on...
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Hi Romy,Thanks a lot for your reply! Very helpful but there is some misunderstanding...I personally have a WE91A 300b Clone, no ambition to build something with the tb3-2000....There is a guy building one though... ( I would if i could!)My problem i...
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I assembled SUN 2A3 amp for my friend and found it to be quality kit and very easy assemble. Kit was old .I think late 90's so maybe quality deteriorated since then. I have variety of 300b Czech tubes and (Eml 300b , KR 300BLX 842VHD ) bought t...
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First of all it was quite interesting and quite educational. Second of all it answers no questions but rather creates more questions. Here is what I try to compile some my observations and thoughts on the subject.
I have a local guy who red my site ...
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Hi, yes i agree that my solid-state amplifiers were not best choice for compressio drivers, they were my second amps when electricity was bad, otherwise I use a custom made 300B from La maison de l'audiophile for my system when electricity is v...
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I never heard the Vacuumstate. A pair of 300B in the “differential SET” application… Hm, would it sound different then a regular 300B? Juts kidding… The last “SET tandem” that I head was with a pair of 6C33C in “differential SET” pushing 45W. The amp...
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Seem ELROG was sinking. Thomas Mayer (aka Vinyl Savor) bought the ELROG assets and the production should continues. I have some "interest" on their 300B tube just because that is not really a 300B, it have thoriated tungsten filaments. I did not hear...
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[quote user="drdna"] However, there is something to be said for the certain magic that can sometimes happen with a particular device. The unpredictable transients and color shades add a sense of alive-ness that seems separate from the standard charac...
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Romy, setting aside for now the issues of loading, the observations about color seem at this point appear to be as much about 300B as they are about DHT. As near as I can tell, people who like the 300B's color-capability either like or do not h...
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It is 300B but I do not think that there is any difference.
http://www.enjoythemusic.com/magazine/equipment/1201/300b/
http://www.enjoythemusic.com/channel/ch300b/
The Cat...
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This material is courtesy to Mr. Shibazaki, the owner of Sibatech Shop in Tokyo, that sell internationally Japanise Hi-Fi equipment.
http://www.sibatech.co.jp/
I hope that Sibatech people are more decent then our american distrib...
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Hi,[quote user="Romy the Cat"] I liked the most when I drove the 6C33 plate with 230V. I run all possible currents and… surprise, surprise I ended up at 150mA.[/quote]I find the same true with other power triodes. When comparing operating conditions ...
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112-71-300B works for me although I sometimes use some 845 PP amps for the lower frequencies.[IMG]http://i75.photobucket.com/albums/i318/murrayjohnson/e96aaf9e.jpg[/IMG]...
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Thank you for your answer.If I understand well, In purpose to do something realistic and good sounding. I should use at least 2 amplifiers (one for high frequencies and the GM-100 amp for low frequencies) with a tubes active filter at the inputs of e...
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[quote user="Paul S"]20W from a 300B? What? I missed that. [/quote]Actually then call themselves Moonoblocks, it means that they use 2x300B for channel, probably paralleled or in SET PP configuration like Audio Mirrors does it. Still it is pushy fo...
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I read the Owen’s observation and it strokes me that he was in a way correct: the Zarathustra does sound kind of strange and very much sonically it reminds a 150W 300B SET. It has some beauty, sweetness, liquidity and appeal at MF and in someway calm...
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[quote user="cat"]Will your tracer be able to pump 250-300mA at 230V? Will it be able to supple up to 100-110V of bias?[/quote]Not quite. I designed it for preamp tubes. But then I realized I could push it to cover a lot of the more popul...
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Myth, perhaps but let look what might actually the myth migh be. There is nothing “on a paper” that presumes a good sound. 109dB sensitivity is not automatically means anything and a 300B SET is not a definition of some kind of abstractive quality. I...
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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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Vincin, thank you for appreciation of my work. A few comments and thoughts about the
direction you went.
I do think that to compare 300B with your version of Milq is
not proper way to demonstrate or to learn anything about sound, particularly
...
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[quote user="Romy the Cat"] There were some educational for myself observations made, in some way saying something about this specific DHT, in some way saying something about Melquiades’ single stage version and the Melquiades’ full-range two-stages ...
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I do not think that it is a mater of the output tube. Yes, the 300B is crappy tube but it is too easy to blame the under-performing tube. I would say that in the situation that Scott is experiencing the problem is not with his amplifier but in the id...
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