Doepfer A-131 Handleiding

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doepfer System A - 100VCA A-130 / A-131

1

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,

though.

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

system.

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

Aud oi

In 1

CV 2

Aud oi

In2

In 2

CV 2

Gain

A-130

VCA-LIN.

In 1

Audio Out

Out

Product specificaties