Alright Julio. I'll take some proper snaps soon. This is a screen grab from Netflix of my system's brief cameo in I Dream Of Wires.
Thats cool that you were part of "I dream of wires".....a movie star in are midst . I have only watched parts of it so I will stream it off netflix.
Your Moog is an early(vintage) Model 15? I know Moog has reissued the Model 15 and larger systems.
Julio, Mine is from the seventies and so is "vintage" but not one of the earliest models. I bought it bit by bit from my friend Eric Hopper (Sylken) but that's another story.
The earlier Moogs had 901 series oscillators which were known for pitch instabilities and they're probably the ones that Forrest suffered with. Moog improved the stability greatly with the 921 series - which is what Loren and I have/had.
Since we're discussing oscillators, I snapped this with my iPhone.
The main 921 is the gem... super-wide frequency range, clamping (to reset where the waveform starts) plus a waveform switch and dedicated attenuator for fast realtime changes. I waste its extreme high-range by primarily using it as an LFO, which its very good at. You might spot the LED I built in which glows red to green depending on the polarity and yellow in the audio range. A simple thing that I've found really useful.
The Sync is not the more typical kind you find in a Prophet 5 where you can create those agressive timbres when detuning one oscillator. The Moog ones just snap out of tune when you push them a bit. I think their sync is intended more for preventing any drift between oscillators when that suits your sound design.
The main tidbit I can pass on is that the 921 oscillators are super-stable if you don't use the Moog keyboard - which I believe is the main cause of drift (from a lackluster sample/hold circuit (probably just a capacitor) and glitches from dirty j-wire/bus-bar contacts (which needed cleaning more than once a year). Once I switched to using a Roland MPU-101 MIDI to CV interface the oscillators became very reliable.