R.A.Moog 702 Percussion Synthesizer - test with LFO

Published on Oct 20, 2015 noddyspuncture

"Carrying on with the 702 - today I completed a "project board LFO". Square wave with Rate and also Pulse Width controls, as I believe that the front panel Rate & Regularity on the 702 are possibly the same..!? You can see me turning them here, outside of the 702. Now before I start getting the usual (and annoying) "Doesn't Sound Like Percussion..." comments - you must remember that this module is incomplete. It was only half built - left unfinished - sometime in the late 1960's and it's not been looked at since. Half of it is missing...! No one knows what it was intended to sound like, and I am just guessing. Anyway, what I have here is the Pitch & Bandwidth controls working and 'almost there'. The Pitch Range switch needs looking into and the Delay Time control doesn't operate at all. I think I will be taking a different kind of "Delay the Oscillator" approach as the circuit which I've drawn out just doesn't add up. This video shows just one of the three oscillators playing that I am testing out my ideas on - and I have also yet to add an EG and a VCA...!"