Mic-driven speaker muting - Behringer DX2000 USB

Описание: How to modify your Behringer DX2000 USB mixer to add mic muting (muting speakers when microphone is live).

This particular approach uses an external relay-based circuit and minimal mixer circuit interference.

WARNING: This mod will void your mixer's warranty.

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Diagram of the microswitch mounting:
https://twitter.com/michaeljtbrooks/s...

Parts list:
Microswitches V-154-1C25 x 2 (https://www.aliexpress.com/item/33008...)
IN4007 diodes x 2 (https://www.aliexpress.com/item/32947...)
RJ11 sockets x 2 (https://www.aliexpress.com/item/10050...)
RJ11 cable x 1 (https://www.aliexpress.com/item/32486...)
Relay x 2, 6V if wiring in series, 12V if in parallel (https://www.aliexpress.com/item/10000...)
Phono socket pair 2 pack x 1 (https://www.aliexpress.com/item/40005...)
PCB matrix board (https://www.aliexpress.com/item/10050...)
ABS plastic box x 1 sized to fit PCB (https://www.aliexpress.com/item/40007...)
Optional indicator LED (https://www.aliexpress.com/item/10050...)
Optional 680-ohm resistor for LED (https://www.aliexpress.com/item/32700...)
Equipment braided wire (any will do, e.g. https://www.aliexpress.com/item/10050...)
8 terminal blocks (for tapping the light power feed)

Tools:
Solder + soldering iron
Dremel (for making hole in mixer and ABS case)
Drill
Glue gun (for sticking sockets into place