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From: Jeff Hale
Date: Sat, 23 May 1998 09:06:12 -0700
Subject: Amp in Overdrive

I have become confused (so what else is new?) by a few of the recent posts
about overdriving amps. Perhaps the comments were specific to a certain
amp but I sense that some of the ideas are generic (e.g. volume control on
mic, tube changeouts, etc.). What I have garnered from the list is that to
overdrive an amp it must be 1)a small amp (e.g. champ), 2)with AU or AY
tubes (there is a direct contradiction in recent posts on this one), with
volume control on a JT-30, with amp gain cranked to 9, and it would help if
it is an old amp (running hot) and all this without feedback. There have
also been some comments on effects and no comments regarding speakers.

So, what do you think the setups (and settings) would be to achieve amp
overdrive? For example: Concert Amp, AT tubes, JT-30 mic with volume
control, presence on 9, intensity on 10, volume on 4, bass 8, treble 2
miked to the PA, very tight cup, etc. (I don't own such an amp, its just an
example). Reverse examples might be helpful too such as "you can't
overdrive a '59 Bassman (again, not a fact, an example).

I can overdrive my Peavey Classic 30 by driving up the gain (Pre on 9,
using a GB. I have to mike the amp because if I turn the volume (post) up
past 2 it will sqeeeeeeel like a pig.

Jeff "Harpdog" Hale
Corvallis Oregon