Doepfer A-130/A-131 VCA (linear / logarithmic) - Manual (Page 4)

A-130 / A-131 VCA System A - 100 doepfer
4
H
Note that if a control voltage is partially nega-
tive (for instance an LFO modulating the VCA)
you need to set the VCA gain above zero,
since otherwise the input signal is only ampli-
fied when the modulation CV is positive (see
Fig. 3).
Fig. 3: VCA output level at different gain settings.
2 CV 2
This attenuator affects the level of voltage control at
socket ". It controls the amount of effect the CV has
on amplification.
3 IN 1 • 4 IN 2
Attenuators 3 and 4 control the level of the signals
input into the VCA.
H
If the output signal distorts in an unwanted
way, turn down the input level, using control
3 and/or 4.
5 Out
This attenuator controls the total volume of the VCA’s
output.
Input
CV
Output
Gain > 0
Gain = 0