Doepfer A-129/3 and A-129/4 Modular Vocoder User Manual

This manual covers the Doepfer A-129/3 (Vocoder Slew-Limiter) and A-129/4 (Slew Limiter Controller), detailing their controls, functions, and usage examples…


Doepfer A-129/3 and A-129/4 Modular Vocoder User Manual - cover page
Brand
DOEPFER
Category
Other Electronics
Document type
User Manual
Language
English
Pages
10
File format
PDF
File size
570 KB
Published
17 October, 2026
Updated
17 October, 2026
MD5 checksum
B4FD89FEE1A6F7791042DBA744A0488E

About this manual

The document describes the Doepfer A-129/x series of modules as a modular vocoder system. The A-129/3 module adds a Slew Limiter to the vocoder, featuring five-way Attenuators and Offset Generators. It also includes a Slew Limiter function that requires the companion A-129/4 module for full operation.

The manual details the specific functions of both modules: the A-129/3 provides signal attenuation and offset generation across five CV inputs, while the A-129/4 acts as a controller offering manual and CV control over slew rates. It explains three distinct modes—'Follow', 'Slew', and 'Freeze'—and provides user examples for integrating these modules into a standard vocoder layout or using them as a filter bank.

What's inside

  • Introduction
  • A-129/3, /4 - Overview
  • Controls and indicators
  • In- / Outputs
  • User examples

Frequently asked questions

What is the range of the offset control on module A-129/3?

The offset control range goes from 0 V to +5 V.

How many A-129/3 modules are needed for total control of a 15-band vocoder?

You need three A-129/3 modules.

What happens to the output signal when the switch is set to 'Freeze'?

The signal at the output is immediately frozen.

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