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Posted: Mon Mar 29, 2010 6:25 am
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Joined: Fri Feb 05, 2010 4:31 am
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Location: Province de Québec, Canada
This amp have no bias ajustement. He have only a balance pot. So you can't do bias .
Best thing is to modify this balance ajust to a real bias ajustement.

Easy job for a tech.

And you must make a bias each time you change tubes.

Groove Tubes buy tubes from many company like Sovtek but they test each tube to be sure they are good and they match tube.

It' a very good company

If you ask how to proced to bias, maybe you are not a tech and you don't know there are very dangerous voltage in tube amp who can kill you.
And you don't have tool to do it.

Better to leave to a good tech


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Posted: Mon Mar 29, 2010 6:38 am
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Joined: Thu Dec 31, 2009 10:34 pm
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It's your amp?

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Posted: Mon Mar 29, 2010 6:40 am
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Posted: Mon Mar 29, 2010 6:40 am
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Posted: Mon Mar 29, 2010 6:41 am
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Posted: Mon Mar 29, 2010 6:42 am
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Posted: Mon Mar 29, 2010 6:53 am
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A self bias amp doesn't mean it don't need bias by a tech. it should be bias.

A self bias amp is a technical word, not meaning like a "self made man".


Remember this; ALL tubes amp need bias ajust or check the bias when you replace outputs tubes

You have to do the modification before you put news tubes;

1- If you want to save your tubes

2- If you want the best tone


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