Here's a simple idea, you might not have thought of, to start you off—4 modules.

DUSTY PULSING DRONE:
1. Patch the SINE from your AI011 Analog VCO into your AI002 Mixer. Manually tune the VCO to a low bass note.
2. Patch the SINE from your DUAL LFO/VCO (VCO mode) into your AI002 Mixer. Manually tune the SINE to approximately the same note. You'll note how the SINES will beat against one another when they are close. That is, the volume will wobble rhythmically.

  1. Patch the PINK NOISE Output from your EDU NOISE/S&H into the FM Input on your AI011 Analog VCO.
  2. Turn up the FM knob to taste. —You'll have a thick pulsating dusty-type character to your sound, good starting dirty timbre for ambient-drone stuff. It should sound like an incoming helicopter, train, or some kind of machine motor.

Experiment—go from there...