Encel X1212 Schematic

[Special K]

Mods please feel free to move this as seen fit:

 

I have finally got my Encel Valve Amplifier to my tech to look at however he is needing the schematic for it to get some of the work done. 
 

Hoping someone here will be able to assist with this please. 
 

It may also need Volume and treble

pots. So if anyone has any… please let me know.  
 

Thanks in advance

 

 

Edited December 9, 2023 by Special K

[trobbins]

Same as the STAR SA-30 on hi-fi engine.  I have restored my unit.  Lots of small safety, reliability and operational issues to correct imho. 

 

The outputs were not unconditionally stable for default 13dB of feedback, and I had to use Patrick Turner's technique of adding some current feedback, which then allowed the first stage step-network to be removed and can provide +/-1dB to 20kHz with suitable tone setting.

Edited December 10, 2023 by trobbins

[Special K]

Thanks for this info.  I will pass it on to the tech. 
 

Hopefully it helps getting mine back into a better condition.