Doepfer A-130 manual

Doepfer A-130
7.5 · 1
PDF manual
 · 8 pages
manualDoepfer A-130
doepfer System A - 100 VCA A-130 / A-131

1. Introduction

Modules A-130 (Linear VCA) and A-131 (Exp. VCA)
provide voltage-controlled amplification.

H This section of the manual applies equally to

the A-130 and A-131, because apart from the
one difference of their response curves, they
are otherwise identical.
For audio signals, you would normally use the exponen-
tial VCA (A-131), and for control voltages, the linear
VCA (A-130). It doesn’t always have to be that way,
The amount of amplification the VCAs provide is deter-
mined by the voltage at the CV input, and the position
of the gain control, which sets the overall gain in the
The VCA has two audio inputs, each with an attenua-
tor. They are amplified by an amount determined by the
combination of the gain and the two CV controls.
CV 1
In 1
CV 2
In 2
In 2
CV 2


In 1
Audio Out

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