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Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

Index last updated: 2026-04-28 23:25 UTC

Message

Re: [gsp-2101] calibrate

2011-06-20 by chris.pelayo@sbcglobal.net

Different tubes are constructed differently and some are "tighter" (so-to-speak) giving a bit more of a controlled & smooth response. Again I would recommend trial & error. A "quieter" tube, especially the 2nd tube in the pair, might do the trick.

Also, try tweaking the 2101's distortion volume & power amp's volume settings to maybe get a more controlled response.

I've even had a loose ground or ultra gainy pickup in my guitar that gave me feedback & squealy noise.

Just some of my experiences with my 2101 I've had for almost two decades. Hope some of this helps....

-
Sent from Chris R. Pelayo's Blackberry

From: M M <strategy400@hotmail.com>
Sender: gsp-2101@yahoogroups.com
Date: Mon, 20 Jun 2011 10:01:35 -0700
To: <gsp-2101@yahoogroups.com>
ReplyTo: gsp-2101@yahoogroups.com
Subject: RE: [gsp-2101] calibrate

So would you think that replacement tubes would cure the squealing noise? It seems like applying gain to the 2nd tube causes it more. I suppose the original tubes need to be replaced regardless after ~15 yrs.



"Never put off till tomorrow what you can ignore entirely."


To: gsp-2101@yahoogroups.com
From: scorpio65@yahoo.com
Date: Mon, 20 Jun 2011 06:24:16 -0700
Subject: Re: [gsp-2101] calibrate

I concour with Graham, Doug's Tubes is an exellent and reliable source or tubes.

Doug actually made up a 'sampler set' for me so I could try different brands in my 2101 and select the tubes that worked best for my ears.

Go with your ears dude, they don't lie (at least to you!!! LOL!)


From: Graham Pearson <me@grahampearson.com>
To: gsp-2101@yahoogroups.com
Sent: Sunday, June 19, 2011 11:12 PM
Subject: Re: [gsp-2101] calibrate

Regarding a source for 12AX7 tubes, I repeat my
previous recommendation, Doug's Tubes:
http://www.dougstubes.com/preamp-tubes/12ax7-ecc83-7025.html?limit=all

Doug has sold me a bunch of tubes for my Randall
RP2/50 and RM4 setup and he's always been dependable, honest, and ships
promptly.

----- Original Message -----
>From: M M
>To: gsp-2101@yahoogroups.com
>Sent: Sunday, June 19, 2011 9:29 PM
>Subject: RE: [gsp-2101] calibrate
>
>
>It's confusing but it seems like many people are buying whatever tubes and putting them in and it works fine? I see that its possible that your 2101 might sound different from another 2101 by doing it this way (not necessarily bad?). If it means that slight gain adjustments might have to be made between units I might be able to live with that. I only really use my 2nd unit as a backup.
>
>Does digitech still sell tubes for
these?
>
>
>
> "Never put off till tomorrow what you can
ignore entirely."
>
>
>
>
To: gsp-2101@yahoogroups! .com
>From: mikedv1@cox.net
>Date: Sun, 19 Jun
2011 21:50:49 +0000
>Subject: [gsp-2101]
calibrate
>
>
>How do you calibrate preamp tubes for the 2101?
>
>
>


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