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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Why use the GM70 apart from its power potential? For one thing, it seems to require literally lethal voltages to become remotely listenable. Is it really "that" linear, to insist on it?But my experience with GM70 is quite imited. I ...
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Romy, very interesting stuff.That was exactly the kind of info I was seeking with my post on curved corners below that your readers took such exception to.Granted I had the idea ass backwards as a great number of people who contacted me privately poi...
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I stopped by today in a local warehouse and picketed a 4x 16” fiber pipes and 2 two 20”. I absolutely love the effect. As soon I brought the tubes to the room and took the cover off in the hall room turned to be much quieter at HF. I did not expect t...
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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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Assuming that by rocking the tubes too aggressively, one might cause the socket to lessen its grip on the pins: One way to check this might be to break open a set of dead tubes and remove a single pin from each, then hold each pin, one at a time, in ...
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HookEm wrote: "Sort of bright and fatiguing at times." I wonder about your tubes. In my systems Carbon Plate Tubes = more high & low extension, more detail, but extended listening wears me out - fatiguing. Perforated Plate = 12 hours of list...
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....may work here as small dis-sincronizations in pumping the current should not matter at ULF.But how much God would be in 121478521785 parallel KT2318 tubes?1/121478521785?One, max two big tubes is still more appealing to me, don't ask me why.I'm t...
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[quote user="Paul S"]Romy, doesn't Tim de P also use this cool Miller capacitance idea in his never-mentioned "high end" tubed corrector? Also, do I remember reading that he runs both channels through the two halves of the same twin-triod...
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I find the fascination of boutique parts amusing. In the case of vintage tubes, using them is a guarantee that one day you will never be able to replace them. In my world, I want to optimize with „sensible“ parts, maybe even stockpile some extra tube...
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Romy, now that there is more than one Melq in the wild, may we have some tips on your approach to maintenance, i.e. what parameters/tubes you generally check/replace and how often? I know the 6 channel version will be different, but there are nonethe...
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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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Hi all, Just joined the cat house... funny seeing the mention of some old stomping grounds here... like Bendix in Red Bank, NJ... they were one of my accounts back in the late 70's. As some of you may know, the U.S. Army's electronics center was...
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[quote user="Wojtek"]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 300...
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[quote user="Romy the Cat"]This mooring a brilliant idea hit me. Instead of the pale and un-spicy while foam the boars me I will use a completely different idea. I so got hooked on it that I ordered the parts already. A few post above I made a post ...
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I do not know, you have to decide to yourself what kind tubes and the most important HOW you would like to test them. For different tubes, differently used the different things are important. I had a few testers and all of them were OK but all ...
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The last year there was some chatter up about artificially created so called “digital drugs”. If you are not familiar with it get familiar here for instance:
http://www.usatoday.com/tech/columnist/kimkomando/2008-08-07-digital-drugs_N.ht...
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KM,
Very good points. There is one more moment that I would like to pay attention. The new prediction tubes are more powerful then vintage tubes. They all claim 1 extra watt because “better materials were used”. So, I wonder, if it would be possible...
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[quote user="Romy the Cat"]
Romy the Cat wrote:That sucks. I use to have a box of perhaps a dozen of YO186 but I did not see it for a while, pretty much from the time I moved to new house. I was listening today some of my “critical” reference stuf...
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[quote user="N-set"]Somewhere earlier last year I searched for some tubes in ex-USSR and YO186 did pop up, esp. in Ucraine IIRC, with not unbearable price ~$100/tube, although in unknown condition (I did not buy any).[/quote]Yes, I have seen the YO18...
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It's hard to predict how the anomaly will sound. Sort of like a dynamic bias shift in the tube. That's why I think IMD. The shift moves around at LF rates, so the HF reproduction can fall on any number of load lines (within loop are...
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Wow! Thank you! What a brilliant idea to make the vertical poll not solid but to assemble it with triangular pipes of the different length! I love how it looks. (I think it was proposed before but I did not visualized it without image)
The only con...
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[quote user="cv"]Btw, did you consider fixed bias to the output stage via the interstage secondary?[/quote] Yes, I did and I passed on this idea. First of all I have 200V and 400V in the amp and I do not what to bring new voltages in. The 200V is too...
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skushino wrote:"...I was operating my amp around 275mA for the same reason as you, to have a margin before V2 runs off the cliff..."About that cliff... As a result of not fully backing off the plate current trim pots (thinking a few turns would suffi...
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[quote user="Romy the Cat"]My few period DHT tube all have this springy sound but they also has a long decay of rattling. It is like string attached under the bottom of the drum and when the drum sound dies away them strings continues to vibrate. I ...
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I don't mind talking about the "soul" of tubes. In my experience, the Kron 2A3 is vastly better Sovtek, etc., and better than NOS RCA 2A3 in my opinion. It has much more "soul" -- to the extent that listening became rather dull without it. I was shoc...
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I very slowly started to convert another amp to DHT. For now I listen just left channel and in a striped down mode: no tweeter and no Injection, letting the MF to care the whole upper range. It is interesting to play different tubes in this mode. Fra...
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It turned out that I end up with 4V tubes for MF channel and am running my YO186. The 2A3 tubers I kind of have left on peripheral of my interests. It is not the 2A3 tubes are “bad”. I did not go deep with 2A3 and did not try their expensive sin...
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As I process what you have said about "blending integrity" I hear a trumpet blowing right at my face, just like I did last night. But obviously this is my imagination at work. Do you mean in general the way tones exist and integrate ...
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Have you tried these with skinny-pinned versions of your tubes? I just bought a bunch of 6N6Ps that have pins so freaking skinny that the sockets on the ML2s won't connect with them. These 6N6Ps have the "up arrow" printed ...
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No matter how often I go through it I still frequently get confused and disoriented when tubes go bad. In this case I have been integrating a new (passive) pre-amp and a new (tubed) phono stage into the system, including trying various tub...
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