DC input impedance on Program CV Inputs (10 of them) on Spectravox

The Moog Forum
1

The input impedance of the Program CV inputs is not listed in the manual.

My experiments suggest about 5k omh but this is a calculated guess.

I am building a DIY multi triggered envelopes for the Spectravox and I am need to set my

RC constant (time) relative to the impedance of the inputs.

Thanks

2

No op-amp after the RC?

4

To keep the part count realistic I am using the load of the Spectravox as the discharge of the caps. For now the circuit won’t be looked at until sometime in 2026.