64 Fender twin reverb -amp tube order?

[dhoward]

What order are the tubes in a 64 fender twin Reverb -amp
and what effects what?
I know the the tube types....
any ideas on good replacements of preamp tubes??
Thanks.

[Structo]

You didn't mention what the circuit number is. I don't know Twin Reverb's that well but Schematic Heaven has loads of schems.

The amp should have a tube chart inside the cab.
But I understand that during these years the charts can be unreliable because Fender would just use up existing charts even though it may be a new circuit.

http://www.schematicheaven.com/fenderam ... _schem.pdf

http://www.schematicheaven.com/fender.htm

http://www.unclespot.com/AA763vsAB763.htm

As far as tubes go, JJ's get a pretty good review, Tung Sols, EH, EI.

[dhoward]

Thanks Tom
It is the AB7 63 Schematic ..

DH.

[M Fowler]

dhoward,

Fender Twin Reverb AB763 tube chart should look like this from left to right.

6L6, 6L6, 12AT7, 12AX7, 12AT7, 12AX7/7025, 12AX7/7025, 12AX7/7025

It uses one 12AX7/7025 for input normal and bright.
One half of 7025 to amplify following tone stack
One 12AT7 reverb driver
Other half of 7025 to is to amplify reverb signal from reverb tank
One 12AX7 in vibrato circuit
One 12AT7 phase inverter
and two 6L6 power amp

Mark