Mic Kaczmarczik's TubeInformation - The Blue Guitar

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From jdekort@concepts.nl Thu Apr 3 12:42:22 CST 1997 Article: 27848 of rec.audio.tubes Path: geraldo.cc.utexas.edu!cs.utexas.edu!math.ohiostate.edu!howland.erols.net!rill.news.pipex.net!pipex!dispatch.news.demon.net!demon!fido.news.demon.net!demon!news2.euro.net!news.euro.net!usenet From: "Jim de Kort" Newsgroups: rec.audio.tubes Subject: Re: GZ37 vs GZ34 for tube rectifiers Date: 3 Apr 1997 18:18:45 GMT Organization: EuroNet Internet Message-ID: References: NNTP-Posting-Host: 194.134.47.189 X-Newsreader: Microsoft Internet News 4.70.1157 Lines: 8 Xref: geraldo.cc.utexas.edu rec.audio.tubes:27848 > Yup. FYI, the GZ-34 is the European designation for the 5AR4, and the > GZ-37 is a 5U4. That's not entirely true. The GZ37 and 5U4 have almost the same specs but these are two different tubes. The GZ36 = CV837, but it is not the same as a 5U4 although it can be used to replace it. Jim Back to JT30 Home
From tremolux@aol.com Sat Oct 1 00:22:56 CDT 1994 Article: 29027 of rec.music.makers.guitar Path: geraldo.cc.utexas.edu!news.utdallas.edu!wupost!howland.reston.ans.net!swiss.ans.net!newstf01.cr1.aol.com!newsbf01.news.aol.com!notfor-mail From: tremolux@aol.com (Tremolux) Newsgroups: rec.music.makers.guitar Subject: Re: Re-biasing after retubing Date: 30 Sep 1994 21:54:05 -0400 Organization: America Online, Inc. (1-800-827-6364) Lines: 38 Sender: news@newsbf01.news.aol.com Message-ID: References: NNTP-Posting-Host: newsbf01.news.aol.com Groove Tubes 6L6s????? Bend over and grab your ankles, GT just reamed out your bank account. Those damn things are the most over rated, over hyped and way over priced things around. You just threw a whole wad of money out the window, Aspen Pitman thanks you all the way to the bank. Here's the straight shit on Groove Tubes. They currently offer 3 kinds of 6L6 tubes: 1. - Chinese shit aka commie firecrackers (POW!!)(6L6C), 2. - Russian Sovtek 5881's, not too bad, reliable, sound ok (6L6B), and 3. - GE 6L6GC, American NOS, their best, good sounding, powerful (6L6 "Old Style"). Which ones did you buy? Their prices are OUTRAGEOUS. Avoid the Chinese stuff altogether, it sounds lame, dosn't last long, and falls short performance wise. This leaves Russian or NOS GE. Antique Electronics in Tempe, AZ can fix you up with a matched pair of either for about 1/4 the price you'd pay GT. They're the same damn tubes, why the hell pay so much more for GT's testing and re-painting????? I've been doing business with Antique for a long time, and they haven't let me down yet. All GT does is buy tubes from suppliers, tests them and matches them, re-paints them, and re-sells them. Let's examine GT's margins, by looking at the Sovtek 5881, the tube they sell as the 6L6B. In the large quantities they buy them, they pay about $5.00 or less per tube. They then re-sell matched pairs at a list price of (I think) $110.00. Now, let's assume the yield is 75% (which should be easy with the 5881 since they're very consistent and fairly reliable), this gives a per-tube cost of $7.50 or so. Now the testing, which they do in large lots, probably costs them about $5.00 per tube in labor. This now brings the tube cost to about $12.50. They would then put the pairs together for about $25.00. Wholesale price would then be $50 per pair, and your local retailer sells them for $100. Antique will sell a matched pair of these Russian 5881s, the very same damn tube, for less than $20. A matched pair of GEs will go for less than $40, where I think they list for $150 from GT. Hey, if you have that much money to spend, I have a good stock of tubes I'll sell you at a discount off the GT price. Just my 2 cents worth. Regards. Back to JT30 Home
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Mic Kaczmarczik's Tube Information
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Svetlana-6550s 07-Nov-1995 11:01 4k
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: : : What transformer secondary vo
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At continuous DC current of 100mA .
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From stratboy@onramp.nett Sun Dec 1
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From postmaster@triodeel.com Wed De
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From mookie2112@aol.com Sat Jul 31
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tubes. Very good in the #2 position
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From postmaster@triodeel.com Thu Au
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Page 47 and 48: RCA - Very detailed when clean, sli
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Page 55 and 56: it!) with a well matched set of GTA
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Page 85 and 86: it beefier magnetics and they can h
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Page 99 and 100: From jjensen@sirius.com Wed Apr 30
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or control grid is sloppy. As you k
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Subject: Re: Tomorrow's tubes? Send
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mirrors. Or try: "It is also availa
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8. Output transformer questions: >
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potential and plate potential, tran
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> A recently voiced although intuit
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* "rewinding transformers with CAD"
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Best Regards, Kevin Deal High End,
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Sovtek also markets 5U4G, 5Y3GT, 6S
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The two, three, and four digit indu
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AEG/Telefunken themselves aren't ab
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By incorporating a tube rectifier i
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+++ +++ +++ -+---+---+---+---+---+-
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splitter in many hifi amps, lots of
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Here's the tough one: Why hasn't an
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The price for matched pairs/quads i
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which case you use unscew and remov
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Ned Carlson Triode Electronics 2225
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After that, people wanted radios in
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I was given one answer which I thin
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Mic Kaczmarczik's TubeInformation - The Blue Guitar

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