It is currently Mon Mar 16, 2020 6:46 pm

All times are UTC - 7 hours



Post new topic Reply to topic  [ 3 posts ] 
Author Message
Post subject: Fender Twim & AB763 circut
Posted: Thu Dec 27, 2012 7:16 pm
Offline
Roadie
Roadie
User avatar

Joined: Fri Sep 25, 2009 9:57 am
Posts: 291
Location: Eastern Iowa
I've got a 72 Twin Reverb. The previous owner claimed it was still the AB7563 blackface circut inside. The tube chart on the inside of the chassis doesn't tell me anything. How can I find out for sure?

_________________
Life is like a sh*t sandwich. The more bread you have, the less sh*t you have to eat.


Top
Profile
Fender Play Winter Sale 2020
Post subject: Re: Fender Twim & AB763 circut
Posted: Thu Dec 27, 2012 7:29 pm
Offline
Rock Star
Rock Star
User avatar

Joined: Sat Jul 03, 2010 2:18 pm
Posts: 6544
I doubt that it came out of the factory with an AB763 circuit. I could have been reverted to AB763 circuit, aftermarket. It could be an AA270 circuit. But, the only way to know for sure is to inspect the circuitry. After draining the filter caps, of course! :D


http://www.webphix.com/schematic%20heav ... _schem.pdf


Top
Profile
Post subject: Re: Fender Twim & AB763 circut
Posted: Thu Dec 27, 2012 8:43 pm
Offline
Rock Icon
Rock Icon
User avatar

Joined: Wed Mar 31, 2010 12:48 am
Posts: 26417
Location: Tombstone Territory
Production of the AB763 Twin Reverb ceased in May of 1968 with the introduction of the AC568 revision. The rocket scientist you bought that 1972 amp from doesn't know $hit from Shinola.

Arjay

_________________
"Here's why reliability is job one: A great sounding amp that breaks down goes from being a favorite piece of gear to a useless piece of crap in less time than it takes to read this sentence." -- BRUCE ZINKY


Top
Profile
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 7 hours

Fender Play Winter Sale 2020

Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to: