Moog Music Forum

Does anyone know how I should wire a cable for CV control of the Memorymoog footpedal inputs 1 and 2?

I have 2 use cases:
1. CV outs from a Kenton Pro 2000. These are TS.

2. Using Ableton Live's CV tools via a DC-coupled audio output from a Universal Audio Apollo. These outputs are TRS.

Thanks!

Provided the MemoryMoog uses the footpedal described in the accessories service manual: As I understand the service manuals of the MemoryMoog and the accessories footpedal the MemoryMoog footpedal input requires a CV input, a ground reference and a minus reference from the foot pedal internal battery. The Minus reference vanishes in the guts of the MemoryMoog somewhere, and I don't know whether it is important or not. The footpedal has a DC input, which can override the battery plus pole, but the minus reference is still connected, what I don't understand.

What you can do is to simulate the footpedal with a battery, a 100k linear pot and the CVs you want to send to the MemoryMoog derived from the Kenton Pro and the Ableton. The internal wiring of the footpedal can be obtained from the accessories service manual. That would mean:

Input connector pin 1: CV
Input connector pin 2: minus reference of the battery
Input connector pin 3: ground reference

Looking at the schematics, the jack is a TRS but it appears that the RING of the jack is only a "Foot Pedal Detection" sensor. So basically this senses if a TS cable is plugged in when the sleeve/ground touches the ring it pulls the 4503 hex buffer low on the digital board so it knows something is plugged in. The tip is just CV and the sleeve ground. I've been plugging external cv into the pedal inputs for years with just a regular cable.