Re: [Harp-L] FENDER BLUES DE LUXE REISSUE: THE BEST WAY TO FIT IT FORHARMONICA.

["Splash" <celtiac@xxxxxxxxx>]

Try putting a 12AY7 in V1.  Or a 5751 but that's almost twice the gain of
the 12AY7.  You can always pull them out and put the 12AX7's back in.  I
plug-n-play with preamp tubes alot.  They all sound a little different.
Even when swapping one 12AXY for another - a 1960's Sylvania for a late
1950's Mullard and so on.

If that's not enough drop in gain, try swapping the phase inverter to a
12AT7.
That's V3

According to the circuit description, V2 provides for the lost gain in the
tone stack.  I suppose you could try a 12AY7 there too.

I would be leery of putting a 12AU7 in there because of the greater current
a 12AU7 draws.  It might be too much for the other components in there.

In a vintage all-tube amp with hand-wired point to point construction and
first rate components I'd not hesitate to put 12AU7's in there, but the
modern stuff is designed by bean-counter engineers who skimp on the
heavy-duty components to save a few pennies.  So skip the 12AU7's.

Here's a copy of the Service Manual  PDF
http://blueguitar.org/new/schem/fender/blues_deluxe-deville_reissue.pdf

You can always get a hot-plate or other heat sucker to allow you to turn it
up for the crunchy tone and keep it at lower volume.

PEACE
Scott
Believe in Magic!
----- Original Message -----
From: "Gianfrancesco Leone" <gianfrancesco_leone@xxxxxxxxx>
To: <harp-l@xxxxxxxxxx>
Sent: Thursday, May 15, 2008 8:39 PM
Subject: [Harp-L] FENDER BLUES DE LUXE REISSUE: THE BEST WAY TO FIT IT
FORHARMONICA.


Hi to all harmonica players friends!

I have just bought a Fender Bules Deluxe amp. I generally use a Green Bullet
mic. or a Shure SM57.
Which are, accordino to you, the more suitable modifications for reducing at
the most the feedback?

For instance, is it enough to replace the pre-amp tubes or is it possible to
do something else?

I am actually not very skill about...
I mean...which types is better to use: 12AY7, 12AT7, 12 AU7?

Above all... which is the best sequence in the V1-V2-V3?
You think is good to replace just one or all the classics 12AX7?

And what about the more consistent brands?

I'll be glad indeed if you kindly would write me your advices!

Thanks a lot in advance.
Gianfrancesco
MySpace: http://www.myspace.com/gianfrancescoleone

My present band: http://www.specialbeat.it/home.htm

Ciao!
_______________________________________________
Harp-L is sponsored by SPAH, http://www.spah.org
Harp-L@xxxxxxxxxx
http://harp-l.org/mailman/listinfo/harp-l