Messenger Model 500 (Class AB)
Documentation Project

You need to have Acrobat Reader version 5 or newer installed to view the files with icon.

If the files with or icon will not display see the Site FAQ for help on printing, viewing and using this information.

    Schematic Diagram



These are the Manufacturer's schematics and have so many errors it's hard to list them all. For starters the center tap on the wrong side of the transformers. Also the VCC to the transformers is not correct and the bias circuit is wrong. Anyway use with care. Some day if I get time and can find one to go by I will redraw the schematics.


Copyright © 1998,1999,2000, 2001, 2002, 2003, 2004

Disclaimer: Although the greatest care has been taken while compiling these documents,

we cannot guarantee that the instructions will work on every amp presented.