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CGS503
Touch Sequencer-Programmer
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3D Model

In the early years Serge Modular manufactured a four-stage Sequencing Programmer which was discontinued when the sixteen-stage Touch Keyboard Sequencer came in to production. Musicians have often wondered what happened to it, since they liked its economy, and the fact that its modest dimensions did not tie up a large section of a system.

The CGS503 sees these Sequencing Programmers revived.

The CGS503 is an extremely versatile manual and automatic controller, combining a touch-sensitive keyboard (ES34 TouchPad), a voltage programmer (pre-set selector), and a sequencer. It is the latest version of Serge's analogue programmer/sequencer.

As a keyboard programmer the CGS503 is used in conjunction with the ES34 TouchPad and permits the performer to access up to 8 separate stages of 4 voltage presets. In this mode the CGS503 can be used to change the settings of other modules through voltage control, altering the characteristics of a sound patch and routing/switching events in live performance or in the studio.

As a sequencing programmer ([CLOCK ON] enabled) the CGS503 permits a wide variety of sequencer effects, since the 8 stages can be programmed to go forward and backward, can be set to run through any desired number of stages (from 1 to 8), and can be triggered to skip stages in a semi-random pattern. These sequencer functions can be further enhanced using the ES34_TouchPad to interact with the sequencing programmer so that the sequence length and stage access can be programmed at a touch in actual performance.

Each of the 8 stages has 4 programmable outputs which are presented at [A], [B], [C] and [D] outputs while the [A-B] output provides the difference between the [A] and [B] outputs. The [GATE] output goes high when any stage is selected while the [VC TOUCH] output is proportional to the amount of pressure being applied to the TouchPads and will represent the highest 'voltage output'.

Specific features include an LED on each stage for immediate visual indication of sequencer/programmer activity, a [RESET] input for a variety of rhythmic effects and a [HOLD] function to disable sequencing

PCB Dimensions: 4" x 6" with 3.2mm fixing points 0.15" from the edges
Power Consumption: +12V @ -12V @
Build Guide

Original article, art & design copyright by Ken Stone

Email:  elby-designs@bigpond.com
© Copyright 2000. All rights reserved.     Revised: July 30, 2020