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2005-11-09, 16:23
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New Blood
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Join Date: Nov 2005
Posts: 4
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Hughes and Kettner triamp tube help?
I just recently bought a used Triamp MKII and the guy sent me a fresh set of Ruby EL34BSTR's with it. Those are the same that come stock with the amp. I just would like to know if I could just swap the old with the new or does it need to be biased.
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2005-11-09, 20:21
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Metal As Fuck!
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Join Date: Sep 2004
Location: LR AR
Posts: 2,680
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Damn,
Isn't that like a $3000 head? Sorry, I don't know about tube amps and whatnot.
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2005-11-09, 22:18
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MotörCat
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Join Date: Oct 2002
Location: 昔昔
Posts: 7,547
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nice amp bro.
are those the power tubes or the preamp tubes? im not 100% sure but i think powertubes can just be switched out but preamp tubes have to be biased
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2005-11-10, 04:12
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TEH PWNZOR!!!1qa
Alumni Staff
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Join Date: Aug 2003
Location: The West.
Posts: 4,433
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is it a matched quad? if so you should be good.
Quote:
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Originally Posted by guitar_demon
nice amp bro.
are those the power tubes or the preamp tubes? im not 100% sure but i think powertubes can just be switched out but preamp tubes have to be biased
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you have it backwards. powertubes need to be biased, the preamp tubes are plug in and play.
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2005-11-10, 12:59
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New Blood
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Join Date: Nov 2005
Posts: 4
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Its a matched quartet?
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2005-11-10, 20:59
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Metalhead
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Join Date: Jan 2005
Posts: 99
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everytime you change poweramp tubes they have to be re-biased, poweramp tubes should always be changed all at once.
It doesn't matter if they're matched or not (but they definetly should be!), matched tubes have to be biased, too.
some people even recommend to re-bias your tubes one or two times a year..
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2005-11-11, 01:15
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TEH PWNZOR!!!1qa
Alumni Staff
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Join Date: Aug 2003
Location: The West.
Posts: 4,433
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quartet = quad = tubes
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Originally Posted by Wicked
everytime you change poweramp tubes they have to be re-biased, poweramp tubes should always be changed all at once.
It doesn't matter if they're matched or not (but they definetly should be!), matched tubes have to be biased, too.
some people even recommend to re-bias your tubes one or two times a year..
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if it's a fixed bias amp(most heads are these days) you should be fine with a matched quad.
it's always the better idea to rebias of course, even with a fixed bias amp.
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2005-11-11, 02:57
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New Blood
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Join Date: Oct 2005
Posts: 14
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bias
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2005-11-11, 04:34
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TEH PWNZOR!!!1qa
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Join Date: Aug 2003
Location: The West.
Posts: 4,433
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Quote:
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Originally Posted by jktheboogieman
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get a trim pot installed.
mesa amps for example. all there amps are bias'd in a certain range these days, and all mesa tubes are tested and matched in that range. so for the most part it's cool.
but of course not everyone wants mesa tubes. it's a cheap mod to have a trim pot installed and get it rebiasd.
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2005-11-11, 06:37
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New Blood
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Join Date: Oct 2005
Posts: 14
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BIAS
YEAH MESA'S ARE BIASED IN A CERTAIN RANGE THAT RANGE IS COLD SO I RAISED MY TUBES JJ 6V6'S WITH GZ 34'S AND RUN IT IN THE EL 34 TUBE RECTIFIER MODE TO HEAT IT UP LIKE I SAID ANY ONE WITH FIXED BIAS I CANT RECOMMEND ENOUGH TO GET A TRIM POT INSTALLED I JUST HAVENT GOT AROUND TO DOING YET IN MY RECTIFIER
Last edited by jktheboogieman : 2005-11-11 at 06:42.
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2005-11-11, 18:09
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TEH PWNZOR!!!1qa
Alumni Staff
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Join Date: Aug 2003
Location: The West.
Posts: 4,433
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Quote:
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Originally Posted by jktheboogieman
YEAH MESA'S ARE BIASED IN A CERTAIN RANGE THAT RANGE IS COLD SO I RAISED MY TUBES JJ 6V6'S WITH GZ 34'S AND RUN IT IN THE EL 34 TUBE RECTIFIER MODE TO HEAT IT UP LIKE I SAID ANY ONE WITH FIXED BIAS I CANT RECOMMEND ENOUGH TO GET A TRIM POT INSTALLED I JUST HAVENT GOT AROUND TO DOING YET IN MY RECTIFIER
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BRUTALLICA!!!1
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