Mic Kaczmarczik's TubeInformation - The Blue Guitar

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numbers on an inside flap of the box. I paired them by the closest numbers. The tubes biased up nicely, well within the expected range for EL34. The tubes warmed up in about a minute, drifted slightly for the next 30 minutes when I re-biased them again. The bias held rock-steady for hours afterward. These tubes sound very good, with an extremely detailed and focused middle range, enhancing the stereo image. The high end was bit splashy, but fairly well controlled. Bass was strong, but a tad flabby - probably due to the lack of capacitance in the stock ST70 power supply. I strongly suspect a larger reservoir will tighten this up tremendously. Overall, I would describe the sound as "etchy." Details really came through, clearly. Even minute details become well defined. Listening material: Mulligan Meets Monk (a favorite of mine) Wonderful tone on the barri-sax. Got a nice dose of reed "raspiness" that makes it sound like it is in the room with you. Piano was well focused and controlled. Bass was a little fuzzy, kick drum was right on and palpable. This recording a has a peculiar doubling on the high hat, so that it sounds from two places in the image. The mono tracks were very crisp, and sharply focused. Mono is a great test for your stereo image, just like grey scale is for testing a color monitor or printout. Everything should appear focused along the center of your listening space. If it isn't, you know something is out of kilter. Buddy Guy and Junior Wells, Alone and Acoustic (alligator CD) Yeah! The thin woody sound of Buddy Guy's Guild acoustic come through loud and clear. Vocals were natural and clean, very expressive. The reverb effect shimmered around the listening room. Dave Brubeck's Out of Time Take Five's left channel high-hat was prominent, sweet, well defined. All the sizzle it should have, and a good strong "tack" with the strike of a the stick. Instrument positioning was well defined, and three dimensional. Stevie Ray Vaughan, "The Sky Is Crying" Stevie's gritty, dark tone came through nicely, especially on Wham. It really sounded like the amp was in the room, burnin away! Every little bit of edge was there. Bass response was nice and clean on this one too, but a tad loose. I'd say these were some of the best EL-34s I've had in a long time. I highly reccomend these. I wish I had a guitar amp handy to try them in as well. But, as good as they sound in a ST-70, I'd be willing to bet they sound great in any amp. AES is a great place to get them, good price and a good enough job matching them. These tubes are available from other matching/testing providers if you are so inclined. Cheers, -- Dr. Nuketopia Technology Director of the World-Wide Monetary Conspiracy All opinions strictly reflect the party line Back to JT30 Home
From tremolux@aol.com Sun Oct 16 09:36:33 CDT 1994 Article: 30160 of rec.music.makers.guitar Path: geraldo.cc.utexas.edu!cs.utexas.edu!howland.reston.ans.net!pipex!uunet!newstf01.cr1.aol.com!newsbf01.news.aol.com!not-formail From: tremolux@aol.com (Tremolux) Newsgroups: rec.music.makers.guitar Subject: Re: Is telefunken a good tube? Date: 16 Oct 1994 03:44:01 -0400 Organization: America Online, Inc. (1-800-827-6364) Lines: 15 Sender: news@newsbf01.news.aol.com Message-ID: References: NNTP-Posting-Host: newsbf01.news.aol.com Yes, Telefunkens are great. I have a slightly souped-up 64 Deluxe Reverb, and I use a Telefunken "flat-plate" ECC-83 (12AX7) as the #2 tube (a Sovtek 12AX7WXT is in the #1 spot, but I never use that channel). I then use an Amperex "Premium Quality" 12AT7 in the #3 spot to drive the reverb, and a Mullard ECC-83 in the #4 spot. The phase inverter is a GE 5-star 6201 (industrial ruggedized 12AT7) that I hand selected for high transconductance and close section-to-section match, and I've re-biased the output for Sovtek 5881s. I use a solid-state rectifier module so as to put as much voltage on the Sovteks as I can. The amp sounds killer, and is quite loud. It's easily my best sounding amp. In one word, the tone is "sweet", and that happened after I put in the Telefunken and Mullard. I also replaced the wimpy Oxford speaker with a Celestion Vintage 30. 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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tubes. Very good in the #2 position
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Organization: Univ of CT Health Cen
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Back to JT30 Home
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RCA - Very detailed when clean, sli
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it!) with a well matched set of GTA
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Lines: 110 Message-ID: References:
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6: enne-al 9-pin 7 is also a "misce
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it beefier magnetics and they can h
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little gift of a bad trace, a bad L
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with the numbers on top in a grey p
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From: jatwood@netcom.com (John Atwo
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Back to JT30 Home
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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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