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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Since renewing all tubes in both ML2s, over the period of about 3-5 minutes, the V2 bias on one of the amps cylcles between .27 and .33VDC. Is this behavior indicitive of a defective 6C33C?jd*...
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- and a very important point - about "matching" the 6C33C halves. I never thought of that, which is funny since I use the 6C33Cs myself and can't find actual matches anywhere (except for a pound of flesh, from VL, of course). And, as you note, the ...
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Running the fully closed Super Milq for a few days I noted some amassing qualities that took the HF performance of Super Melquiades even further then Melquiades. This quality consists of a complete absent of any king of glitz and very atypical for th...
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Maybe use +/- same design (with boosted/own PS, if necessary), but fuse the 6C33C plates together for 3 dB, or double-double for 6 dB. Might be closest thing to a known quantity.Best regards,Paul S
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[quote user="cv"] Consider a triode connected 13E1. 95W dissipation, will probably work beautifully with the existing OPT if you adjust the gap down and if you can rewire your arrays to present a somewhat higher impedance.Something like 400V-450V / 2...
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If you read my post at:
http://www.romythecat.com/GetPost.aspx?PostID=4235Then you are generally informed about the history of the 6C33C but here is another wonderful and uncommon illustration. It is reportedly a guidance system part of Russian crui...
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[quote user="Paragon"] Romy,any information out there for a set of Power / Audio output Trans/ for a Single-Ended 6336B Monoblock project? Thanks, The Paragons [/quote] The 6336B is twin triode, I have seen some peoples is it but I personally have ...
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I am always curious about those silly lines.The 230V 165mA point for the LF sections does not look so bad to me... maybe a bit of expansion effect, which could be good for counteracting some evil within the LF drivers.If I understand right,...
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Here is an interesting article by Dmitry Nizhegorodov about his experiences to use 6C33C. (I do not know who Dmitry is) I disagree with Dmitry’s amplifier. Also, I very much disagree with his vision that an amplifier is juts a machinery where voltage...
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To anyone contemplating the use of Teflon sockets as pictured and described by me in the post at this link:http://www.goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=10&postID=15499#15499DON'T DO IT.These sockets cannot deal with the heat genera...
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Romy,I also liked these tubes even when new, and found that they improved a bit further with 100-200 hours burn-in (of course I did not oven-fry them.)If you still have those Herbie's Hal-O 60mm tube dampers that did nothing for your 6C33C, I suggest...
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[quote user="hagtech"]Note the '63 has much higher gain. The horizontal spacing is basically "mu". Interestingly, the 6e6p has lower gain than both of these. To me, the curves are beautiful. Spacing is relatively constant, ind...
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[quote user="Paul S"]I got new 6C33Cs for V2s from Lamm because no one else wants to match them, let alone match them for gain…[/quote]
There is no meaningful mutual conductance or bias matching for 6C33Cs (in context of ML2) besides gain matching, ...
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I never knew that Quicksilver does 6C33C, they never did when I was still monitoring what companies do. Their Triode Amp was, if I remember correctly, a base PP unit with a pair triode strapped 6L6/KT-88 tubes, where people were trying to put-in many...
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New here, but I thought I would continue my 5+ year search for another pair of these sockets. I have all the parts to build a 6C33C OTL using 4 tubes and would like to find another pair of these. I have one pair that I happened upon late one night ...
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Nice job, KOT, and nice trace near clipping! It's always good to see a full, symetrical wave. Did you say you did or did not connect the halves of the 6C33C? Of course I ask because of the power you cite at clipping... Please remind me, what is t...
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Haralanov, thank you for the info.More please! Is his a dedicated bass amp?What is the operating point and load?Why 6c33c? How reliable GU81 is?...
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Scott, since you mention only the 6C33C operating points, I assume you replaced just the big sockets. If you did or do all the sockets, I hope you will chronicle the procedure.Anyway, that's got to be a relief!The stock soldering is so perfect that I...
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might be the 6C33C power amp version of the Zeus single ended solid state amp (also with minimum number of components), here.Sooner or later, I hope I will be able to try them both, until thenbest regardshorny...
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Well - there is a technical literature related the cooling of the tube. According to it the temperature of the glass surface is not equall - it is hire in the places, where heater is visible. So - you can make a pair of radiators, at...
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Romy, Big thanks for your answers. But i've got another question :)You mentioned gas regulator as grid current "absorber".Very good point, because personally i hate to use resistor as a grid leak.Instead of it i'll use choke - almost with any tube, i...
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peter wrote: By "dynamic viscosity" do you mean the reluctance of an amplifier to be dynamic, i.e., the degree to which an amplifier sounds like it is bogged down, usually as a result of a poor rise time on transients, i.e., poor HF response, or a tu...
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This is kind of funny. I got another B2 amp a few days back. It was near new condition, at least inside. As I plug it to drive my ULF I felt that it produces some kind of strange bass. I did not like it at all and it was very different then what ...
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[quote user="peter foster"] By "dynamic viscosity" do you mean the reluctance of an amplifier to be dynamic, i.e., the degree to which an amplifier sounds like it is bogged down, usually as a result of a poor rise time on transients, i.e., poor HF re...
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[quote user="jessie.dazzle"]As a way of forcing myself to see the thing as a whole, I will start by converting this schematic to a 3D CAD model, illustrating each component and its relation to the others (with more distance between the parts than in ...
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[quote user="Welborne"] 1) There are hexagons on the schematics marked with A, B, C ...M. What are these? Are they testing points or they carry some meaning? I can't find much info about these here. [/quote] Yes, the hexagons are test points. Do ...
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[quote user="darkmoebius"] Believe it or not, this very short, direct, explanation helps put everything else I have read about the Melq evolution in perspective. [/quote]
Hm, darkmoebius,I really do not know why it clears skies for your in anyways. ...
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I do not know why people go into low-sensitive loudspeaker and they go crazy in order push the last drop out of the class A2 operation. From a different perspective the Macondo’s woofer towers with 97.5dB sensitivity are low low-sensitive loudspeaker...
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Srajan Ebaen made a write up about a Polish amp from Ancient Audio
http://www.ancient.com.pl/e_single_six.htm
http://www.6moons.com/audioreviews/ancient3/single6.html
It is good that Srajan do not write about sound anymore, whenever he did it appe...
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After 7 years of my Koshka's in wooden cradles I thought it was time to give Koshka a nicer body. So I have gone to a 4 box solution. The Output section is done. Now waiting for the bigger power supply 4Uchassis to arrive fro...
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