Rebiasing My Amp


Homebrew1709
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Homebrew1709
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02/10/2007 12:12 am
So I wanna switch out the old 5881's for some EL34's and there is a switch on the back of the amp for doing so. Should the internal bias still be set? Can I do it myself without killing myself (assuming i am a reasonably intelligent person ;) )? Point me in the right direction.
# 1
Dr_simon
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Dr_simon
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02/10/2007 5:18 am
what sort of amp is it ?

I did my Marshall TSL recently and it was a cakewalk.
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# 2
Homebrew1709
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Homebrew1709
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02/10/2007 9:32 am
Its a Carvin MTS 3212...I bought it used and the power tubes appear to be in need of switching...The repair shop I talked to quoted me for 45 bucks with a 2-3 week wait :eek:
# 3
Dr_simon
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Dr_simon
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02/10/2007 11:15 am
Im not familiar with those beasts however if you have a voltmeter it shouldn't be too much of a problem.

A good person to talk to is Bob form www.eurotubes.com. He is a good egg and can also sell you some totally brilliant tubes (JJs) !!

The quote doesn't seem to bad but the wait is totally unreasonable !
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# 4
Dr_simon
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Dr_simon
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02/10/2007 11:16 am
In fact checks this out !

http://www.eurotubes.com/euro-v.htm
My instructors page and www.studiotrax.net for all things recording.
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# 5
Homebrew1709
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Homebrew1709
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02/10/2007 11:34 am
Wow, thanks Doc! And why the hell are u up so early (or late)? Anyways, I'll give the article a more thorough look tomorrow when im sober. I've already ordered some Svetlana EL34's and JJ 12ax7's so hopefully they'll bring the beast to life! Thanks again, bro!
# 6
Homebrew1709
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Homebrew1709
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02/10/2007 11:45 am
Looks complicated btw...what do i need besides a multimeter?
# 7
Dr_simon
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02/10/2007 5:18 pm
If it is anything like the TSL, that it !

Always up early, comes from having too much work !

Baaaa !
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# 8
dvenetian
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dvenetian
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02/17/2007 6:37 am
Originally Posted by: Dr_simonIf it is anything like the TSL, that it !

Always up early, comes from having too much work !

Baaaa !

The TSL100, nuf said. Great Amp!! Have you had the opportunity to play through the 6100LE by any chance? If so, what's your opinion if it? I played through it a few times now and it's a Monster, but I still need to find that warm tone by dialing it in. Haven't got completely there yet. Those old JTM45's kinda spoil ya, I guess. Even the walls get all happy with fuzzyness.
# 9
Homebrew1709
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Homebrew1709
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02/18/2007 1:01 am
Well I biased the sucker by myself last night and nobody died! Woohoo! Biased it pretty hot (i think)...about 180 mA per Bob at Eurotube's recommendation. Sounds sweet! :cool:
# 10
Dr_simon
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02/18/2007 8:31 am
Originally Posted by: dvenetianThe TSL100, nuf said. Great Amp!! Have you had the opportunity to play through the 6100LE by any chance? If so, what's your opinion if it? I played through it a few times now and it's a Monster, but I still need to find that warm tone by dialing it in. Haven't got completely there yet. Those old JTM45's kinda spoil ya, I guess. Even the walls get all happy with fuzzyness.


I haven't had the pleasure however the TSL kited out with JJs and a powerbreak is more than enough for me !! I have been running either a PRS CE24 or a Gibson Classic through it and it just never fails to tickle my Yumm bone !
My instructors page and www.studiotrax.net for all things recording.
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# 11
Dr_simon
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Dr_simon
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02/18/2007 8:32 am
Originally Posted by: Homebrew1709Well I biased the sucker by myself last night and nobody died! Woohoo! Biased it pretty hot (i think)...about 180 mA per Bob at Eurotube's recommendation. Sounds sweet! :cool:



Well done mate, the first time is always a bit scary (I was plenty nervous doing mine) !
My instructors page and www.studiotrax.net for all things recording.
my toons Brought to you by Dr BadGAS
# 12
dvenetian
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dvenetian
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02/18/2007 3:51 pm
Originally Posted by: Dr_simonI haven't had the pleasure however the TSL kited out with JJs and a powerbreak is more than enough for me !! I have been running either a PRS CE24 or a Gibson Classic through it and it just never fails to tickle my Yumm bone !

Know what ya mean. I souped up my DSL100 w/JJE34L's and ECC83S's, what a difference!!!! Especially when I run my Les Paul Standard D.C. through it. Thick as molasses!!!
# 13

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