Ken Stone/1973 classic Serge/Serge bi-directional router

The following info on the 1973 variant of the Serge bi-directional router module is presented for educational/historic purposes only and are not to scale.

Construction
PCB connections
 * A = A1/A2 select input (1)
 * C = A2 (1)
 * B = A1 (1)
 * D = B (1)
 * E = A1/A2 select input (2)
 * F = A2 (2)
 * G = A1(2)
 * H = B (2)
 * I = A1/A2 select input (3)
 * J = A2 (3)
 * K = A1 (3)
 * L = B (3)
 * X = +12v
 * Z = -12v

There were extensive errors on the jack wiring marking of this module.

CC-BY-NC
Readers are permitted to construct these circuits for their own personal use only. Serge Tcherepnin retains all rights to his work.