Schematic for 331A equalizer ?

[Ben King]

Hi,  I'm hoping that someone out there can point me in the direction of a schematic - or any detailed information about this 331a Eq.    It has western electric components and is a real beauty.    This thread seems to be related ... http://groupdiy.com/index.php?topic=10112.0;prev_next=prev#new

Thanks,

Ben

 

[gyraf]

It may be related to the 279A?

http://www.americanradiohistory.com/Archive-Catalogs/Western-Electric/WE-23A-line-equalizer-and-279A-equalizer-panel.pdf