Output impedances
This directory contains USENET articles Mic
has saved about guitars, equipment, pickup, techniques, players,
and so on. Mic has graciously granted permission to post the
stuff on the JT30 page on the off chance that it might be useful
in the context of Blues Harmonica. Mic is not responsible for
the content, just the collection.
Circuits
Output impedances
From Dr.Distortio--(at)--bs.mhv.net Tue Jun 6 22:40:24 CDT 1995
Article: 1614 of alt.guitar.amps
From: Dr.Distortio--(at)--bs.mhv.net (Dr Distortion)
Newsgroups: alt.guitar.amps
Subject: Re: Tube output impedances
Date: 6 Jun 1995 22:20:17 GMT
Organization: MHVNet, the Mid Hudson Valley's Internet connection
Lines: 21
Message-ID: <3r2kb1$2e--(at)--ver.mhv.net>
References: <3r25f7$35--(at)--ewshost.loc3.tandem.com>
NNTP-Posting-Host: csbh.mhv.net
X-Newsreader: TIN [version 1.2 PL2]
duffy_paul (pau--(at)--verest.tandem.com) wrote:
: Anyone know the output impedances of various power tubes, especially
: the EL34 and 6L6 and 6V6? I was looking through the Pittman book
: and could find suggested load resistance and plate to plate resistance
: but no output impedance.
Those are the figures of merit. You won't find "output impedance" listed
in a tube manual. The recommended plate-to-plate load impedance is the
figure to look for.
: I have a Soldano SLO-100 which I would like to run EL34's in, but
: Soldano says it won't work because the output impedance of EL34's
: is so different from that of 6L6's.
He's full of it. Both types will work well into the same plate-to-plate
load (typically 4K-5K for most amps). Most likely, his power transformer
can't handle the extra heater current demands of the EL34, but he doesn't
want to admit it. It's funny, but I usually convert the other way
around; namely, setting up EL34 amps for 6L6GCs. I guess it's all a
matter of taste. The 6L6s are certainly more rugged.
Index:
|
