VCO trimmer
This is used to calibrate the V/OCT inputs for accurate pitch scaling. It affects all of the V/OCT inputs.
For a quick tuning check, patch MOD 2 GATE OUT to 5V/OCT. Set MOD2’s LFO switch ON. The
VCO should be playing a sequence of alternating octaves.
This is used to calibrate the Volume Envelope VCA to match the envelope generators.
When it is set properly, decaying notes fade away to silence with accurate exponential character.
If it is not set correctly, notes may continue to sound after the envelope decays fully.
If it is not set correctly, the tails of decaying notes may be clipped off prematurely.
** Note that there are two envelope generators, and their RATE knobs have a slight inuence on the envelope
baseline (quiescent) voltage level. So its best not to obsess over setting this trimmer perfectly. Just make sure the
decay envelope fades completely to silence at any combination of settings on VOLUME ENVELOPE and RATE.
VCA trimmer
Q: What type of tool do I use to adjust the
trimmers?
A:
Use a screwdriver with at blade or
Philips tip, 2.5 mm, 3.0mm or 1/8”