Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Misc Schematics and Layouts => Topic started by: jaster55 on June 05, 2019, 12:34:35 am

Title: Late 70s Fender Super Reverb
Post by: jaster55 on June 05, 2019, 12:34:35 am

I'm working on a Fender Super Reverb Dated 1977-78... This amp has a bridge rectifier circuit and a master volume. All the layouts I have found show a tube rectifier and no master volume.
Does anyone know what I have and where can I find information on it.
Thanks In Advance...
Joe

Title: Re: Late 70s Fender Super Reverb
Post by: pdf64 on June 05, 2019, 02:29:56 am

https://el34world.com/charts/Schematics/files/Fender/Fender_ultralinear_pro_rev.pdf
The same scheme was used for several models, so the whole list has to be scoured to find a likely contender.
I don’t think a layout is available.
 
Beware of the impedance switching and ‘isolated from chassis’ arrangement used for the ext speaker jack. It’s actually in series with the main jack.

The higher HT voltage of these amps meant that they couldn’t just bodge the jacks in parallel as with previous eras; halving the load would stress the power tubes.

Title: Re: Late 70s Fender Super Reverb
Post by: 2deaf on June 06, 2019, 03:58:47 pm

The 70W Super Reverb has more than one output jack arrangement.