Re: [Harp-L] switching tubes to create easier breakup

[Michael Easton <diachrome@xxxxxxxxxxx>]

Check out "Tube Amp Talk for the Guitarist and Tech" by Gerald  
Weber.  It's a good source for learning how to maintain your tube amp.
Some good info on replacement tubes, burning in new tubes and what  
tubes not to use with some vintage amps.
It's a very thick book with info on most of the vintage tube amps and  
some newer models.

I bought my copy at Borders Books. $30.    pub. Hal Leonard.

btw, I never swap out preamp tubes.  Some sockets are meant to use  
12at7s,(reverb and phase inverter on certain Fenders)  not 12ax7's.   
Check your mfg.'s specs.

mike

On Sep 2, 2005, at 2:43 PM, John K. wrote:

> --- In harp-l-archives@xxxxxxxxxxxxxxx, stiv whiskywine
> <thepinkcrickets@xxxx> wrote:
> Hey
>
> When you guys talk about switching tubes from 12ax7 to something that
> will breakup easier, are you guys switching everyone of the preamp
> tubes or just 1 ? What would happen if you just switched one?  Man, I
> need to get hip to gear!
> Steven Campos
>
> Hey, Steven.  The usual "I'm-no-expert, but" caveat applies here.
> There are so many variables with pre-amp tube swapping -- the amp, the
> eq controls on the amp, the power tubes, the number of pre-amp  
> tubes in
> the amp, which ones you swap,the microphone (huge!), the brand and
> vintage of the tubes, the ears and taste of the listener -- that it  
> can
> get difficult to make generalizations.  So, I think it's worth getting
> a handful of preamp tubes(including some NewOldStock) and experiment
> (maybe take some notes).  Try 12au, 12ay, 12at, 12ax.  I think this is
> fun, and isn't a problem unless you get so into it that you stop
> playing!  --john k.
>
>
>
>
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