Mic Kaczmarczik's TubeInformation - The Blue Guitar
Mic Kaczmarczik's TubeInformation - The Blue Guitar
Mic Kaczmarczik's TubeInformation - The Blue Guitar
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From postmaster@triodeel.com Sat Sep 19 15:35:57 CDT 1998<br />
Article: 127736 of alt.guitar.amps<br />
Path: geraldo.cc.utexas.edu!cs.utexas.edu!math.ohiostate.edu!howland.erols.net!news.maxwell.syr.edu!novia!sequencer.newscene.com!not-for-mail<br />
From: postmaster@triodeel.com (Ned Carlson)<br />
Newsgroups: alt.guitar.amps<br />
Subject: Re: Sovtek EL34s rattle prone/how 'bout gz34 rectifiers too?<br />
Date: 18 Sep 1998 23:42:02 -0500<br />
Organization: Triode Electronics<br />
Lines: 44<br />
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On Fri, 18 Sep 1998 20:58:11 GMT, Marc Ferguson<br />
wrote:<br />
>You're not the only one with the Chineeze GZ34 problem. Multiply # of tubes X .4 =<br />
># of sparkomatics. Good light show in da combo! Ned's got the real deal.<br />
>Mullards. EOS. NOS.<br />
Not many, and not cheap, tho.<br />
Note that GZ34 take a long time to wear out..they'll<br />
outlast the power tubes by a long time, normally.<br />
Don't toss them just 'cause they're old, used or both.<br />
If you've got a worn out GZ34, you can hear it,<br />
lack of headroom, breaks up too early, lack of power.<br />
It's even easier with a meter: with normal bias, if the<br />
GZ34's shot, the voltages will be way low.<br />
Same goes for other rectifier tubes...while there's<br />
no great shortage of 5U4 & 5Y3, since there's<br />
a finite supply, might as well hang onto good<br />
used ones.<br />
One rectifier tube that draws about the same<br />
filament current as 5AR4 but has a load o' sag,<br />
but can handle the current is 5R4<br />
(GY/GYA/GYB/WGB..same thing in different bottles),<br />
which can usually be had pretty cheap, since there's<br />
not much stuff out there that uses them.<br />
5R4-WGA & WGB look like little weird flower<br />
vases, and they're aviation rated to 40,000 feet,<br />
so you can brag to your friends that you've<br />
got "B-52 tubes" in your amp. Just the thing<br />
to have if you get a gig at the USO on Diego Garcia.<br />
Ned Carlson Triode Electronics "where da tubes are!"<br />
2225 W Roscoe Chicago, IL, 60618 USA<br />
ph 773-871-7459 fax 773-871-7938<br />
12:30 to 8 PM CT, (1830-0200 UTC) 12:30-5 Sat, Closed Wed & Sun<br />
http://www.triodeel.com<br />
Your Start Page for Tube and Tube Amp info on the net...<br />
http://www.triodeel.com/tlinks.htm<br />
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