Calrec

[gyraf]

Calrec BL1496 - BBC balanced output.

 

[gyraf]

Calrec QF2925 pinout

 

[mjrippe]

Finally!

 

[mjrippe]

Schematic rearranged from 1061 version for nicer printing.  Board layout drawn by hand.

 

[mjrippe]

Not my best drawing, but it gets the idea across...

 

[gyraf]

Calrec (originally Calder Recordings) company history - from Studio Sound December 1970, look for page 536:  https://www.americanradiohistory.com/Archive-All-Audio/Archive-Studio-Sound/70s/Studio-Sound-1970-12.pdf

Jakob E.