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That posting bug has been addressed.
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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hi Romy, KR audio is making high power SET and parallel SET amps using tubes designed by them specifically for low frequency amplification (read as in not radio frequencies). They are getting the power with lower voltages and higher currents th...
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I totally am a believer that the construction of a tube determines how it will sound. This makes perfect sense when you consider the tube is relies on the changing flux of electrons in a vacuum. It is easier at least for me to visualize this as a ph...
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[quote user="Paul S"]While you are merely being empirical, there are actually plenty of devices that aim to "benefit" the end sound of SS gain by using tubes to "condition" the signal from DACs, etc. Also, there are plenty of commercial widgets ...
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[quote user="hagtech"]Romy, you were right. I just got in another pair of 7788 from eBay. This time, one tube has a little bit of microphony, not bad, really. The other was dead quiet! No ping at all. Very impressive, th...
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I suppose this further erodes my "credibility" regarding the "tube sockets" hysteria, but it is what it is, so here goes:Today I finally had the right combination of alone time and motivation (not to mention great electricity) and I got around to swa...
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Okay so I got the NOS Sylvania "Spring Top" dual filament 2A3 tubes and have been listening to them for a while, now I am ready to make a report on the tube.
The tube is well built and structurally sound. Tapping gives a very small "tabla" sound ...
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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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Wow! I did not realized that almost 4 months have passed since I wrote last.
Quite a few things have happened the last 4 months that I have played with the 6C33Camp/preamp combo. I have tried at least 3 different vendors on the Ulyanovsk type, the ...
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[quote user="drdna"] I built this amplifier more than ten years ago, before these other tube companies were in business. I know the Vaic tubes, which the EL tubes are related to. However, I have not tried either tube. Maybe it is a good idea (and I c...
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the less you know about...So, how do we go about screening tubes for audio, particularly audio signal tubes? The only person I can think of who claims to have found a specific testing paramerer for this is Roger Modjeski, of Music Reference and...
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I just discovered it, somebody pointed it out in another thread, and it is so funny.
I am commonly known for hating Russian tubes. I mean there were very few tubes that were designed in Russia and most of the Russian tubes t tubes are juts rep...
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Adrian, I wonder how you wound up with the never-mentioned FET 10? FWIW, it was one of the better all around phono stages I've heard, and - not that it matters - I prefer it to the EAR 834 I heard. Is this another case wher...
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Romy,
I have good confidence that it was the tubes and not the circuit. I have checked the cathode driver that bias the 6C33C and there was not any problem. Sure if the cathode bias failed, the 6C33C current will shoot way up and burned up the fuse...
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[quote user="Romy the Cat"][quote user="drdna"]However, there is no comparison to the expensive tubes from Kron, Sophia, and Emission Labs. These are all in a separate category. These produce a very different sound. It is like this: on the old black ...
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[quote user="Romy the Cat"]
For instance the 2A3 has no tungsten cathodes and therefore its cathode might be “poisoned” in time if it was not properly pre-burned and some other methods were not taken care. Those methods are expensive but they ...
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Lamm uses Russian ceramic sockets, at least use to use them 10 yeas back. What he uses not I have no idea. The material of sockets is not as important – the profile of contact is the key. Unfortunately Russian sockets use triangular contact that make...
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In the end of the 40’s IBM made the Selective Sequence Electronic Calculator which contained 12,500 vacuum tubes (25L6, 6J6, 6211) that could multiply two 10-digit numbers 40 times a second. The first versions of ENIAC used 19,000 vacuum tubes. The U...
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[quote user="Paul S"] I have been surprised that you have not already pursued the Zarathustra for your multi-driver, sealed LF. From your early descriptions of both, this seemed like a natural pairing and the most likely way to go, to keep the ...
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Putting the Pure Power in the basement might be fine, but I don't think you need to banish the Melqs down there, at least not yet.You don't know yet if there will be kids, and if so it will still be a couple years before one arrives and becomes mobil...
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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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Having listened for a while with the tubes, I have come to some conclusions. The three tubes I have seriously listened to are: Kron, Sophia, and Emission Labs. All the tubes are much better than any other modern 2A3 tubes I have tried. I felt my in...
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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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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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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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