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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Since I "forgot" to mention it before, the very interesting amp I mentioned up the thread is the Nat Audio Generator monoblock, a Serbian PP triode/SS hybrid of some sort. Now that I have the MA-9S2s, there is no reason for me to check back on t...
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Hi Romy,i want to use the 6E6P-DR (triode mode) as driver in my tube 45 amp.I use a D3A (triode mode) with Anode choke at 180V, 12mA. Grid 2 is connected via 50 Ohm resistor to anode. Grid 3 (pin 8) is connected to cathode.The 6E6P-DR (also 6E6P-E) a...
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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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It looks like the Europeans have for themselves some kind of audio festival on regular base.
http://www.triodefestival.net/
I am not sure what it is, how it organized, who runs it and who participate it. My initial feeling that ...
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There was a cool Russian-made tube GU-48. It is high-gain, high power pure direct heated triode with 300W on plate and 10A on carbonized tungsten cathode. I did not hear but it looks like something in the class of RCA 833 tubes. I think Japanese sel...
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The Czech Republic-based Emission Labs Company introduced their new replica of famed AD-1 Triodehttp://www.emissionlabs.com/html/club/labreport.htm
It looks like Yamamoto, Japanese amplifier manufactures has made an amp with this tube: A-06Shttp://w...
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I have received a few emails today informing me that this idea of a super high power low frequency SET would not be possible and it would be “pushing the things WAY too far”.
Well, perhaps…. I am not planning to build it but I would like to encourag...
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Jim, yes, I use the 6E5P as triode, I never tried tetrodes, never has needs to do it. I have somebody tried them as tetrodes and commented negatively about their sound. I do not know if it is true – it what “they say”. Ironically I do not like how th...
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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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I was looking at my recent observation that smaller anode makes better HF sound; better intimacy of sound and better articulation of detains.
http://www.RomyTheCat.com/TreeItem.aspx?PostID=12370
Then I was looking at my feeling th...
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N-set, starting from reasonable input, the 6E5P can swing some serious voltage, and Romy also sings its praises in terms of sound. Maybe sim that, running it in its safe zone to a 6C33C. From there, you have all the power you'd want to drive -- what...
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Perhaps I am asking for trouble, but did anyone had any experience with those SE mosfet creations made by Susan Parker?Preamp uses Romy`s beloved 6C33C tube and the 10W power amp has two transformers, two resistors, one mosfet and that`s pretty much ...
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The preamp has the classic tube regulated power supply using 5R4, 6AS7, 6SJ7. It is transformer coupled output and has no capacitor in the signal chain, the gain is about 8db, so it is not a buffer. For convenience, it does has a remote control. It i...
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[quote user="guy sergeant"]The load lines are horrible. I can't imagine it gives a very accurate representation of what is fed into it. Maybe that's not what you are after.[/quote]It is not that I completely agree (or completely understand) the Eduar...
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Hallo Romy, i'm interested with half triode at 6C33C , but im confuse how to set it,... Full Triode : pin 1&2 give 6,3v , pin 6&7 give 6,3v.Half Triode : series pin 2&6 1&7 give 12,6v or just use pin 1&2 give 6,3 vthanks before......
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Another particle of a good Horn Propaganda. It was published in Sound Practices in 1994 and written by Joe Roberts. I disagree with quite many of the author’s statements but his strategic view that the majority of the horns and the horn installations...
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The ECL82 = 6BM8 was used a lot in low-end amps, both push-pull and single-ended. Actually, according to your radio's schematic to which you posted a link, they are not being used "one per channel," rather it is a mono radio (nothing wrong with that...
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It is pitty. Half of the 6C33C could be not used properly - if there will be 3 additional contacts for another triode. Then you could preserve the second triode, not applying any voltage between plate and cathode. What you do - you use on...
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[quote user="son"]Hallo Romy, i'm interested with half triode at 6C33C , but im confuse how to set it,... Full Triode : pin 1&2 give 6,3v , pin 6&7 give 6,3v.Half Triode : series pin 2&6 1&7 give 12,6v or just use pin 1&2 give 6,3...
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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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That's a tough one.... the 6528 is on par with the 6336 dual triode (30 watts dissipation per section) but is overkill for a couple watts. It does have a mu of 9 which is quite high for a large IHT dual triode. It should easily drive a 1K load,...
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Hello, thank you for your answer, I already read this very interesting link (this how I knew about this forum (like "yes ! there is weird people too"))I never saw too much parellele things too (excepte for solid states); I hope nothing is wrong doing...
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Hi Romy,i want to use the 6E6P-DR (triode mode) as driver in my tube 45 amp.I use a D3A (triode mode) with Anode choke at 180V, 12mA. Grid 2 is connected via 50 Ohm resistor to anode. Grid 3 (pin 8) is connected to cathode.The 6E6P-DR (also 6E6P-E) a...
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Paul, there are those Russian 450W pentodes GU80/81.http://www.tubes.ru/techinfo/AmateurRadio/gu-81m.htmlI'm also wondering how it behaves as a triode. 450W +/- compact and linear triode would be great! ...
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Hi,[quote user="morricab"]You may be right. It would perhaps be worthwhile to look into "better" transformers but I am not sure that an advantage can be found over just going RCA to XLR adaptor into the balanced inputs and thereby bypassing the...
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Jim, yes, I use the 6E5P as triode, I never tried tetrodes, never has needs to do it. I have somebody tried them as tetrodes and commented negatively about their sound. I do not know if it is true – it what “they say”. Ironically I do not like how th...
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[quote user="Thorsten"]MY PERSONAL current realisation (where I to build one) would look like this:1) S&B TX-102 as volume control, with suitable switch2) 2V Lithium Battery negative pole to the grid of the Valve, bypassed with good non-magnetic ...
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Novygera,If you are really going to run a single-ended pentode as a pentode (not triode-strapping the screen grid) then you will almost certainly need to use some negative feedback, whether global or local. It is partly needed to reduce distortion, ...
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I have tried the 307A in triode connection in the "standard" no feedback moron 12Axx (in my case 12 AT7) easy configuration with a coupling capacitor and it was "nice". Critical listening was almost impossible, I kept zapping around to find more "imp...
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Gera, there is already a LOT of discussion on this topic salted around this site. I suppose you do know, but a couple of things you said made me wonder; anyway, at the risk of offending you (and not meaning to): "SET" means "single-ended triode" (as ...
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