Triaxis Problem
Anthony Robinson
Just hoping I can get some info before I send my beloved preamp away to have
very expensive repairs 3000 miles away.
My Mesa Triaxis was doing fine until a couple weeks ago when my clean and
lead two channels (each of the modes) turned to muddy crap. It is nearly
impossible to dial in a CLEAN tone in the clean mode w/o any overdrive, and
the lead 2 modes sound farty in the low end. Another strange thing is that
in lead 2 under high gain, when I stop playing, there is an after-effect
roar that sounds uncannily like thunder. It is not the continous normal
preamp noise, but something additional that dissipates after a few seconds
(it decays just like real thunder might). Mesa says I am a crackhead and
they've never heard of any such thing. They also suggest that my preamp
tubes are bad, though I've had them checked by a local tech. Even when I
told Mesa this, mesa insisted that even though the tubes may seem just fine
to the tech, they may not be up to Mesa's standard (and he then went on to
explain their testing procedure, which is nice, but I already know about
it). I have tried my power amp alone and it is fine, and I barely play loud
at all, so I know it's not my speakers (my cab, incidentally is only about 4
months old, it's a rectifier 2x12 w/ vintage 30's).
Has anyone experienced similar problems? Also, my lead 1 green and yellow
modes have always had a weird problem (but since I never used them it didn't
matter really). The harder I play in lead 1 green and yellow, the more out
of phase it sounds, almost exactly like an envelope filter. The mesa guy
said he had never heard of either the preamp thunder or the phasing thing,
but insisted it must be the preamp tubes, even though it didn't seem like
it. They want 100 bucks an hour to take a look at it, and before I shell out
$350 plus shipping from maryland to california, I want to know what other
people think, and what other people's experience has been regarding sending
mesa stuff in for repairs.
thanks!
-Anthony Robinson
Christopher Brown
Buy one brand new 12Ax7 and move it through the rotation one tube at a time
and see if it helps. Cheaper than replacing all 5 at once.
Even try swapping positions with the tubes you have and seeing differences
may shed light.
Anthony Robinson wrote in message <735gg9$fbr$1...@camel25.mindspring.com>...
pfris...@mindspring.com
> they've never heard of any such thing. They also suggest that my preamp
> tubes are bad, though I've had them checked by a local tech. Even when I
> told Mesa this, mesa insisted that even though the tubes may seem just fine
> to the tech, they may not be up to Mesa's standard
>
>(SNIP)
>
I know this is no help, but have you tried replacing the tubes. I 've heard
the triaxis eats them up, and when I hear that your clean sound is distorted
that's the first thing that comes to mind. You might as well try it you have
nothing to lose at this point. Could it be possible that your's is one of the
ones with the bad LDR's? Just to assure you mine is working great.
Paul Frischmann
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Paul Braunbehrens
I'm having some strange problems. One is that the fx loop led flickers on
and off from time to time, I haven't bothered with it since it's no huge
problem and I don't want to pull it out of my rack, but now I get
unexplained changes in volume, and that is more of a problem. OF course,
it could come from somewhere else in my rig, that's the problem with
intermittent stuff, it's hard to figure out where it originates.
Also, I was wondering if anyone know about this, I vaguely remember reading
about it somewhere, is it bad for the tubes to run the 290 at the 1/2 power
setting a lot?
Thanks.
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"Christopher Brown" <christop...@att.net> wrote:
> It does sound like your tubes!
>
> Buy one brand new 12Ax7 and move it through the rotation one tube at a time
> and see if it helps. Cheaper than replacing all 5 at once.
>
> Even try swapping positions with the tubes you have and seeing differences
> may shed light.
>
> It sure sounds like the tubes, I would also suggest rotating a good new tube
or swapping around. One other silly thing I wanted to add. Make sure your
cabling is good. I thought I had a problem with my triaxis but it turned out
to be the cableing I hooked it up with. They people a Boogie have always
been right on when I have dealt with them. Good luck, post back and let us
know how it works out. Merry Christmas>
> Anthony Robinson wrote in message <735gg9$fbr$1...@camel25.mindspring.com>...
> >
> >Just hoping I can get some info before I send my beloved preamp away to
> have
> >very expensive repairs 3000 miles away.
> >
> >My Mesa Triaxis was doing fine until a couple weeks ago when my clean and
> >lead two channels (each of the modes) turned to muddy crap. It is nearly
> >impossible to dial in a CLEAN tone in the clean mode w/o any overdrive, and
> >the lead 2 modes sound farty in the low end. Another strange thing is that
> >in lead 2 under high gain, when I stop playing, there is an after-effect
> >roar that sounds uncannily like thunder. It is not the continous normal
> >preamp noise, but something additional that dissipates after a few seconds
> >(it decays just like real thunder might). Mesa says I am a crackhead and
> >they've never heard of any such thing. They also suggest that my preamp
> >tubes are bad, though I've had them checked by a local tech. Even when I
> >told Mesa this, mesa insisted that even though the tubes may seem just fine
> >to the tech, they may not be up to Mesa's standard (and he then went on to
> >explain their testing procedure, which is nice, but I already know about
> >it). I have tried my power amp alone and it is fine, and I barely play loud
> >at all, so I know it's not my speakers (my cab, incidentally is only about
> 4
> >months old, it's a rectifier 2x12 w/ vintage 30's).
> >
> >Has anyone experienced similar problems? Also, my lead 1 green and yellow
> >modes have always had a weird problem (but since I never used them it
> didn't
> >matter really). The harder I play in lead 1 green and yellow, the more out
> >of phase it sounds, almost exactly like an envelope filter. The mesa guy
> >said he had never heard of either the preamp thunder or the phasing thing,
> >but insisted it must be the preamp tubes, even though it didn't seem like
> >it. They want 100 bucks an hour to take a look at it, and before I shell
> out
> >$350 plus shipping from maryland to california, I want to know what other
> >people think, and what other people's experience has been regarding sending
> >mesa stuff in for repairs.
> >
> >thanks!
> >
> >-Anthony Robinson
> >
> >
> >
>
>
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