Re: [Harp-L] 59 Bassman (generalizing tube swaps)

[Michael Fugazzi <mfugazzi67@xxxxxxxxx>]

This is for Bob, and anybody else who'd like to share:

In general, is it best practice on an amp to(for tone
and feedback elimination) start with a strong signal
and then use use lower gain tubes, or start with a
lower signal and use higher gain tubes?

So lets say you're going for tone and the most
possible volume before feedback.  Would you start with
a 12au in the first stage, use a higher gain tube for
the other stages and then use another high gain tube
for the phase inverter?
 
or

Would it make more sense to start with a strong signal
from a tube like the 12ax7, use a low gain tube for
the the other stages, and then a high gain tube for
the phase inverter?

I hope my questions make sense.

Mike
--- mfugazzi67 <mfugazzi67@xxxxxxxxx> wrote:

> 
> --- In harp-l-archives@xxxxxxxxxxxxxxx, Cljdm@xxxx
> wrote:
> Hi Bob,
> 
>       Your posts have always been helpful here on
> Harp-l. The pre amp
> tubes 
> 12ay-12ax7-12ax7 in your bassman: is that as you
> look at the amp from
> the back 
> going in a right or left order? I have subs in my
> re-issue going from
> left to 
> right  (looking into the rear of the amp)
> 12ay-12au-12ax7. Also with a
> 5AR4gz 
> retifier. To my ears I like this set up in my
> re-issue, but I am
> tempted to 
> try another ax7 in the middle preamp tube. Would
> this be closer to the
> original 
> set up?
> 
>                                            Thanks,  
> 
>                                                     
>     Chris Mastakas
> _______________________________________________
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> --- End forwarded message ---
> 
> 
> 
> 
> 


=====
Mike Fugazzi
Harmonica/Vocals


		
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