Techron Front Panel Modification

In order to make the front panel of the 3 Techron amplifiers less user changeable, we replaced the variable pot with a fixed 3.8k Ohm resistor, and the phono jack and the DPDT toggle switch with a 6 pin  circular connector.  Pictures of the fornt panel before and after are below.

Techron front panel before modification
Back of front panel after modification
Front of front panel after modification

The  part order for the 6 pin connector as well as the cable mating parts is here.

Thanks to James for making the panels.
Updated by dB on Oct 26, 2004
The 6 pin connector pinout:

PIN      Function
A (GR - Y/BK)    -   Gnd (for current monitoring)
B (RD - Y/RD)    -   current mon +
C (OR - Y/VIO)    -   current mon -
D (WH - NC)    -   constant voltage mode switch
E (BL - relay in+)    -   mode switch input+
F (GR - relay in-)    -   mode switch input-

RTE24024F relay:
(OUT - BL) Switch return
(NC - WH/GY) Constant voltage
(NO - Y/WH) Constant current

[Additional information, 2008/8/5 Yuki:
RTE24024F TYCO/ELECTRONICS/POTTER & BRUMFIELD PRINTED CIRCUIT BOARD MINIATURE RELAY, 2 POLE DOUBLE THROW CIRCUIT, 24 VDC COIL VOLTAGE, CONTACT CURRENT RATING AC 8 A/8 A AT 277 VDEG C, CONTACT CURRENT RATING DC 8 A/8 A AT 30 VDEG C, PCB MOUNTING, GENERAL RELAY]

Updated by Yuki on Jun 30, 2005