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For issue 1.1 Pot/Switch Boards only: Modification Required
An error in the copper tracking of the issue 1.1 ASV Pot/Switch board results in a small amount of
bleedthrough from VCO1's reset pulse to the wiper of the PWM pot of VCO2. This manifests itself
as a slight instability in VCO2's pulse width when the wiper of PWM pot is set away from either of
its ends. This can be corrected by slightly restricting the frequency response of the amplifier that
sums together the control voltages from the pulse width pot and the PWM pot on the main board.
A 220pF 2.5mm C0G/NP0 ceramic capacitor should be placed between pins 1 and 2 of U16 on the
underside of the issue 1.1 ASV
Main
board.
This modification is not required with issue 1.2 Pot Boards.
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