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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Last weekend, just for fun, I brought the amp and preamp to the 2011 Burning Amp in San Francisco. On the first speakers, the Audio Kinesis, I let the heater warmup for about 15 min, and then switched on the power, the amp was fine, we played...
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decoud, as I have mentioned before, over the years I've always gotten about 25% bad ones of tubes from all sources, including those that were supposed to be hand picked, triple-tested, high-spec, precision-matched tubes that (of course) cost extra fo...
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[quote user="shannon"] Only less than 9ma before.
Now over 22ma nice glow, to bright maybe. voltage drift gone.
[/quote]
I think you might have closer to 5mA before. I did see that with low load I had voltage
drift. Interesting is that th...
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I am still waiting for a (single stage) tube that can make full range Music via speakers. I mean, this is the real issue, isn't it? Sure a good tube will pass a "full range signal" through the right transformer; but where is the tube that will do t...
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Did you just answer your own question? Use the B2, then. Plenty of nice, small tube amps for tweeters, if that's what you want. I could list tube and SS amps, but I hate doing that "in public", not to mention, as you just pointed out, you only need t...
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Would anybody recognize who manufactured those 0A2 regulators?
Since I use them quite aggressively, I picked at MIT's fleamarket a few dozens of them dirt-cheap. The tube looked suspensions. Then marked as Amperex, Made in England and National Elect...
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[quote user="Romy the Cat"]Hey, Chirag, long time no see. [/quote]Hi Kitty,I always try to see whats going on on this site, but by the end of the day I'm usually too bloody tired to think clearly enough to write something of interest. This week...
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Dear Romy,
I have been reading the threads on GoodSoundClub about your journey with development of the Melquiades and Super Melquiades amplifiers. They are very interesting to me. I am pleased that your purpose was to produce a particula...
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[quote user="Genn"]However - you decided to use 6E5Pi to drive 6C33C, and the filed of competition in this case might be higher - including those E810F, E180F, EL84.. or even 12AT7, or even (probably) WE 437. Some of them would need...
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Guy,
could you, please, specify the workpoint for the tube and workload you use in your comments.
SY, Genn...
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[quote user="guy sergeant"] I'm sure there are many bad implementations of the 845 and 211. Almost all of the commercially available ones are pretty mediocre. However I have heard good examples of both so I know it can be done. [/quote]
Actually I d...
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JJ,
yes, I got Hal-O dampers a few years ago and I do use them but it would require more say then just “I use” them.
I have them for a long time. I initially bought then to use with 7788 tubes that I am employing as an input tubes in my phonocorr...
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N-set, I just only heard that exists somewhere the STV-series regulators but I never seen them, even the datasheets and it is a big surprise to me that they are available and “not expensive” Would you point a source where it might be? If a 150m...
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[quote user="Romy the Cat"]I was listing it and I did not really like what I heard. It was all together juts some kind of “Ordinary Sound”. I recognize that I say “I do not like sound” but I can’t say anything more spastic. All of the sound that I ge...
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[quote user="Romy the Cat"]Are any of those new tubes besides the Chinese tubes are single plated?[/quote]I believe they are all single plated.
[quote user="Romy the Cat"]I have bought some very nice 2A3 and 6A3 double plated from 1942 and 1944 an...
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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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Why do we even bother with tubes for low levels? Of tubes generally, I have used 6SN7s, 2A3s and EL34s with no known-to-me problems, but lots of various noise trouble with certain tubes, including 6DJ8 family, KT88s, and on and o...
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That 8233 might do it. Also noticed the 6CL6 in triode mode will get you almost there, but only a mu of 20. The 6688 could be a substitute.jh...
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I have no idea where this saga with REL leads me. Even though I do have substantial sonic improvement over the original REL version I still do not know if I like this tuner all together. The 50 years all tube tuner with 17 tubes is very freaky thing....
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No more interest in this subject?
Reinhard...
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[quote user="N-set"]
- considering another red tip 12AX7 for the output but given the change was not big at the input it's more of an itch...a costly one at $275
[/quote]After a second thought actually the output tube is obviously in the feedback...
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Thanks, I have seen those sockets they might be fine but they do not decupling from chasses and they are not soft. I was thinking about something that has spring effect. Pearls sockets for instance has a soft rubber decupling between base and the pin...
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Actually, Romy, it is simply that the tubes that came with the amp were not "good" in the sense that they were not doing their jobs. Period. You may remember the pulses through the speakers and how new input tubes cured the problem? ...
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Actually I was wondering what the hell you were talking about what you were bitching that the ML2 socket can not handle 6N6P first. Ether you changed over 10.000 tubes in there or something else was wrong because the ML2 sockets are fine (except the ...
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[quote user="dazzdax"] Sakuma's idiosyncratic and esoteric way of thinking (he believes for example that tubes have a "soul") is not to everyone's liking. He is projecting his mind into a sort of tone control. At least for him this tone control bring...
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Rooting around for manufacturers' operating curve/info on 6922s I came across a short paper I got years ago from electronics genius Roger A. Modjeski. In a nutshell, RM talked about internal variables in tubes that affect their electrical charac...
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[quote user="AlexBerger"]Hello Romy,
What brand of 0A2 do you use in your phonostage?I used RCA, but after 1.5 years of work it began to spark when phonostage is switched on.I tried Siemens, Mazda and now Sylvania 0A2.Siemens has "disco sound"...
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I recently picked up a MAX-282 tone arm and when setting it up with my test record I'm getting buzzing in the right channel during the bias test tracks. Changing the anti-skating setting has no audible effect. On other arms I have if I set the VTF to...
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are you asking if i like higher impedance tubes with my drivers i have always love the sound of imac tubes round plate triodes !!! i change amps alot right now i im running 75tl amp for highs and a 300B for bass drivers . i hope this answers your q...
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[quote user="muddasir"]Thanks paul for well thought reply. Two things need clarifiication, i am not new to the subject and am a constant and avid reader.Secondly my preference for music is hobby for electronics and pleasure of listening through appli...
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