Instead of using sparse module space in the rack, I have made a handfull of cables with “in-line” small potentiometers. I find it strange that cables like these cannot be found anywhere to buy, and I have included the .gcode-files for both the little box, the lid and the knob, if you want to make some for your own synth.
Normally signal and control outputs would be routed to a module with potentiometers, and back again to inputs. This is extra necessary if modules have no output potentiometers, like the way I make my own modules to save panel space. I use linear 10 kohm potentiometers since all inputs are 100 kohm, and linear to make the cables useable with control (CV) signals.
The cables used are “RG174, 50 ohm, 2.8 mm”, the jack connectors are “Amphenol KM2PB-AU”, and the potentiometers are “ALPS Alpine RK09D1130C1B”. The photos below show how to solder det cables. Note that the cable-shields are soldered to the potentiometer pcb-pins on each side, and 15 mm shrink tubing is placed where the cable passes through the box. After putting the little assembly into the box, a few drops of contact-glue (where the cables leave the box) will keep everything in place, including the little lid. Remember to color-code the cables with shrink-tubing before mounting the jack-connectors, and find a suitable way to mark the input and output connectors to be easily recognized.
