twin reverb tube chart what circuit ?

[hebaton]

HEre is the tube cchart on twin ( siverface ) I a interested in, NO circuit denomination.
HOw do I know what it is ?

[sluckey]

Can't tell from that pic. Best way to tell is pull the chassis and begin comparing the amp with all the twin reverb schematics you can find. Even then, it may not be a positive ID.

[Stevem]

A great start is the date code off the mounting lip of the speakers if there original.
The next step to narrow it down in the silver face era is to tell us if it has a master volume control and what the wattage rating is as stated by the speaker jacks on the rear of the amp?

Is there a hum balance adjustment on the rear of the amp?

All the transformers on the chassis have a date code on them also.

[Ten Over]

I have seen that tube chart on 135W twin's before. My '73 has the old style tube chart instead of the one pictured.

[DSXMachina]

This looks like the exact same amp in a post from 5 years ago. They seem to have confirmed it with Fender as a 1981.
https://www.myguitarbuddies.com/please- ... 28947.html