Doepfer A-132-8 Octal Poly VCA

£149.00
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A-132-8 is an octal VCA and primarily planned for polyphonic applications


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Manufacturer: Doepfer

Category: Keyboards & Synths

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Details

Details

A-132-8 is an octal VCA and primarily planned for polyphonic applications. The module contains four VCA pairs. The amplification range for each VCA is 0 ... 1. 0V CV corresponds to amplification 0 (full suppression), +10V CV to amplification 1. Each pair includes two daisy-chained VCAs. One VCA has a linear control scale, for the second VCA linear or exponential control scale can be chosen by means of jumpers. We decided to provide two VCAs for each voice because usually one VCA is required for loudness envelope and a second one for velocity (or other functions like individual voltage-controlled loudness of each voice, amplitude modulation and so on). All VCAs are DC coupled and can be used in special applications also for the processing of control voltages.
These controls and in/outputs are available:

Default Gain 1 (GL)
Default Gain 2 (GX)
CV Inputs for the four VCAs #1
CV Inputs for the four VCAs #2
four Audio Inputs
four Audio Outputs
Audio Sum Output

The module features two Default Gain controls (GL, GX), that enable the opening of the first four VCAs (L) and/or second four VCAs (X). For this the controls GL and GX generate two internal control voltages 0...+10V which are connected to the switching contacts of the sockets 1L...4L (control GL) and 1X...4X (control GX). As long as no patch cable is inserted into the socket in question the internal default control voltage (GL or GX) is used to control the corresponding VCA. This is necessary when the VCA in question is not in use (i.e. no external CV available). Otherwise the VCA would close and there would be no output signal even if the other VCA in the chain is open. The controls GL and GX are also useful for testing polyphonic patches (e.g. for tuning the VCOs).
As soon as a patch cable is inserted into a CV input socket the corresponding internal default control voltage (CL or CX knob) is no longer used to control the VCA in question. Rather the external CV patched to the CV input socket does now control the level of the VCA in question.

Specifications

Specifications

Specification

Width: 8 HP / 40.3 mm
Depth: 45 mm
Current: +40mA (+12V) / -40mA (-12V)