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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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If there's one thing I hate about internet forums it's people postulating about sounic characteristics and possible failing in equipment they have never heard.
FWIW Romy, David has been making waves and creating groundbreaking designs for over 30 ...
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I have the Zu Druid's which Romy has referred to. I purchased the speaker's based on the presumption that their high sensitivity and impedance would be perfect to run SET amps. After having read the great success Arthur Salvatore had running the Fra...
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As to the best transformers souding more transparent than the best resistors, I'll believe it when I (don't?) hear it. You claim to have heard this but I most certainly haven't. Based on theoretical arguments the noninductive metal film r...
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Romy wrote :"...The USB is full duplex or bi-directional interface where stream flows in both ends. This enables designers to put a clock that might everything on the receiver side (DAC) and let this clock to manage the USB’s and even reader timing. ...
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I once saw a phono stage that used sand diodes, and I have seen an interesting "tank circuit" amp that uses tube diodes +/- like a "buffer". Of recent "popular" amp designs, I have seen a lot of triode PP, but I think this is the first SE pentode I h...
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[quote user="noviygera"]anyone familiar with the sound of this amplifier RH-307a?[/quote]
The RH Amplifiers is a snippety subject. For what they meant to be they are reasonable design avoiding large cap in feedback and in particularly of you have ...
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Well, I cannot say that i have much interest in the installations on his Facebook page and this should be a strong indicator of the type of audience being targeted by the driver manufacturer.Nonetheless, he has sent me some frequency responses, but n...
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In the passing in Netherlands European Triode Festival http://www.triodefestival.net/index.php?page=etf-2007-photos... there was presented horn system by Marc Henri and Andre Klein
(Information and image courtesy to Raymond Koonce at ht...
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(sorry, this is supposed to be posted in the questions and answers colume but I must be so stupid to have it posted here and now I don't know how to move it there.)Hi Romy,How are you! This is Welborne, from far across the ocean, Hong Kong. I have k...
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Hmmm.... I'll have to speak with the future Dr. Schwips about intermodular distortion lowering IQ's in children. If it's just another risk factor on top of faulty genes then I think I can live with it. That cacti would suddenly turn pale and the base...
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So, I have been looking into suitable valves to base a preamplifer around that are suitable for driving the DSET's. The pre must have a broad bandwidth, low output impedance, some current drive, and not be prone too easily to microphony. Oh, and pr...
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Gee, now that I read my post again after yours.... that last bit didn't quite say what I was wanting to say (I hate when that happens). I was really referring to people being "brand specific" as my example of the 45 showed that you can't always...
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Paul SI don't have vinyl playback at the moment. My source is an MSB Platinum Data IV transport with transport power base, fed into a Metrum Hex dac. The amp is an Ars Sonum Filharmonia. So there isn't much of a power drain. Also: cabling is...
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[quote user="JJ Triode"] You mentioned bagpipes--do you think any bagpipe or other Celtic music can be of serious interest? I don't necessarily mean audio interest, but music/cultural interest. [/quote] JJ, I have no idea. Amy loves bagpipes and she...
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Ok, here's some calibrated sweeps. I ran the tetrodes in triode mode, with G2 strapped to plate through a 100 ohm resistor. First up is the western 6e6p.[img]http://www.hagtech.com/blog/images/6e6p.jpg[/img]I then built an adapter card th...
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Hi,
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 I noted (if not elimi...
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Ah, those figures seem more reasonable - 30pF seemed a bit low. Well, I'm not sure what you should be on the lookout for - as you say, it's a completely different animal to having a 3uF in line with the S2. What I would suggest, and this isn't ...
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I received a comment form people who reportedly well-familiar with using the high-frequency high gain tubes. They suggested me that the resistor between screen and grid (R23) might be eliminated and that would bring some benefits. It very much might ...
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Ok, now it is done and it is official as I see nothing available for conceptual improvement in the crossover circuit. Interestingly this version offers the most interesting sound as well, since the circus was tune for sound, not vise-versa, it is wha...
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But here it is. I made this monoblock fit into less than a square foot. It is tight. I use Hammond iron throughout. Their stuff usually works pretty good for power supplies. I have some photos at my blog. [img]http...
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[quote user="morricab"]I have a phono stage from the Korean company Silvaweld that uses the 5651 tube in the power supply as a voltage reference. It also is using a Russian 6C19Pi tube along with EF86 pentode as the high voltage regulator. ...
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[quote user="Romy the Cat"]
Anyhow, here is what I think I would do if I use the Alnic’s Preamp. Get rich the 7721 and 7788 and to put in there my 6E6P-DR in triode mode. The tube has very same pins and a full equivalent. Increase the plate voltag...
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Hi Romy,I think you may be struggling to get 10-12db of gain out of a spud amp (the term is a play on "one tuber").... May just about get it with 6C45.... remember you will be stepping down something like 12 to 18:1 on the OPT.best case: 10db require...
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I went today to Srajan’s site check the news and saw the following:
“April 08 - New HalfNote Audio brand: The latest addition to Mr. Barnum's growing stable of import/export products are the $70,000/pr 50-watt parallel 845 Grail SET monos by Chalice...
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I've been pushing this intellectual excersise (masturbation?) of solving Romy's constraints on a powerfull bass SE amp.Thanks to Stephie Bee the humanity have now a decent model of GU81M, so before electro-cuttingonself, one can see if the electrocut...
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I have heard hundreds and hundreds of audio systems and mine is by far the best. Honestly nothing even comes close. There is a scientific reason for this. MY system starts with a PERFECTLY tuned room...something overlooked by ma...
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Paul, et al, I tend to agree that many DHTs can have a fair amount of AC hum output from an AC filament. In general, I've not found any tricks (like humbucking chokes) to make any significant difference. Ideally, a perfectly balanced AC filament "sh...
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It is amassing how a guy can so much talk and to say nothing. According him Lamm invented PS and Class A operation…
http://www.hometheaterhifi.com/preamplifiers/854-lamm-ll1-signature-stereo-tube-preamplifier.html?showall=1
The re...
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Hi Roman, hi all... intriguing post and interesting questions, as I've been for about 20 years a triode and, before, a tube user and a glowing-in-the-dark maniac.My experience...I purchased - years ago - an Hiraga 20W which I used as a bass enclosure...
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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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