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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="Romy the Cat"]
I always was kind of afraid of it. Any single zillion years tube I see is “NOS in box”, “measured as new” or “never work”. So, I wonder where those uses up old tubes are gone? Do people trash them or juts sell them “as n...
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I was contemplating the 6 Channel Super Melquiades conversion – it will quite a revision – and I am slowly inclining to make it not 6 Channel but 7 channels…Anyhow, the post will not be about the needs of extra 7th channel but rather about one of the...
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[quote user="Anonymous Gilles"]I am not fgrustrated but trying to gather information before making a decision. I sen you an email from france and I own electrovoice patricians in a large room, about 100 square metres my question is is your amp real b...
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Whoever implemented and experimented with my slicing of lower MF range by 3 channels (Upperbass, Fundamentals, and MF) know how powerful it might be. Changing loading and volume of each of the channels it is possible to write any sound one might ...
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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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The Super Melquiades Amplifier is essentially the 3 parallel running Melquiades amplifiers optimized for driving my Macondo Acoustic System, with line-level or inner-stage filters. This SET uses a full 6C33C at LF output and ½ of 6C33C for HF and MF ...
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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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Or whatever you call it, it says there is no sucha option that I make a connection error, but hey..., I'm 41 years old and I know from experience that sometimes this voice is wrong ...
As I mentioned, I am not in the apartment at the mo...
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Anthony and Romy, thanks for taking the time to respond to my question. I want to take on this project as a learning experience both in terms of simply building an amplifier from a schematic and for my edification on sound reproduction.
I’m starti...
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BR, I have never used Romy's amp design, but I have used 6C33C SETs with Lowthers. I do not use my Lowthers FR, for reasons that are fully explicated throughout this site, so I don't worry about LF from those drivers. IMO, their best is MF up to tr...
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Dear Romy,it had been a while before I hv return to your goodself and here.The Meliq had been built according to your circuit. However, after a few days' breaking in period. The VR2 have issue and causing sudden increase of current... I think it migh...
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I know it is a trivial point, but I dislike the whiteness of valve sockets. Since neither teflon nor ceramic is easily painted I have mine covered in black nomex fabric. This is no good for the 6c33c, of course, as it needs all the breathing spac...
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ZZ, no surprise, I suppose, but this has already been discussed here at some length (God knows where, though...). It's the same grease used for spark plug wires (at the plug connection) and high voltage connections in general, and I use it very spar...
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Over the course of the past year I was very slowly experimenting to the sound of my headphone amp. I know much more about it sound then I knew last year and I learned a lot more how to get “different” sound from it. The more amps ages and the more I ...
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...but resistor between screen grid and plate, to my hearing, makes sound slightly unnatural, especially in highs.But this may be not true in your case (i didn't try to use this resistor with 6E5P, only with other power tetrodes), so i think i'll sug...
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Romy,My DSET amps are still open (no top plate) so are fully ventilated, but I have left vents in the top plate around all of the valves and installed two computer fans (running very low speed) that push air from the bottom and out the vents on the t...
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[quote user="Gregm"]Actually, that could be a viable commercial product: a "stereo am"p allowing for four channels. One hi side, one low side, per channel.Any moron purchasing this could be stratosphrically happy flabbergasting his pals by "passively...
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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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[quote user="romy"]send you two 6C33C – a new one and the burned out[/quote]Please do. I have interest in the result myself and don't mind spending the time. I can post photos for each tube.[quote]a trace for the very given tube is “nice ...
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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="AnonymousUser"]I am thinking of launching into building or rather having buitl by a techie friend a pair of melquiades. Could you tell me more about the cost of building a pair of these amps? then how do they compare to other amps? I mea...
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We should always remember that VL designs by design, rather than with his ears. While I would guess it's OK to sub 950s for 935s, at the same time I'll bet VL has taken into account ESR and other parameters that the average capacitor-swapper mi...
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I usually go with turns ratio. The ribbon tweeter has I
think x175, the 6C33C full range is 10x or 12x and 6C33C in DSET is whatever it
was – it is kind of irrelevant in DSET setting. The YO186/PX-4/RE604 I think
has x25 transformer. My loading nu...
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A few days ago I decided to learn how the new Melq sound and made a quick speaker level crossover for one of my Macondo’s channels, putting the new built Melquiades to drive the acoustic systems that the SET meant to drive (Before it was 82dB and 88d...
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Hi Romy,
I just want to add my experience I had last year with a transformer based (actually it was an autoformer based) "passive" preamp. I thought that this could be the final solution in my preamp quest. Alas, it was not the case.&nbs...
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Deja vu: I seem to remember getting about this far on the subject any number of times. Not only do I have fairly limited applications, but I also noticed that many of the testers do not even allow the kind of testing I would want to ...
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Hi,
Here is pic of my OPT from Pieter before poting. Each transformer is wound on 4 AMCC-160 cores
...
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I have noticed the same kind of control and "density" of sound from KR audio amps, which are zero feedback. Have you tried this brand of amp? The one thing that I can tell conclusively about the two different amps is that neither one suff...
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Romy,I added the fuse recently just for protection for the output transformer since these 6C33C tubes plate current can get very high and might damaged them. Also DC coupling on this high gm tube can cause plate current to go max if something failed....
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Another memeber of the 6c33c family
http://www.audioart.no/satiamp.phpHave no ide what it is but looks very sexy.The Cat...
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