Doepfer A-150 Dual VC Switch User Manual
System a - 100, A-150, Introduction

doepfer
System A - 100
Dual VCS
A-150
1
1. Introduction
Module A-150 (Dual VCS) contains two separate
voltage-controlled switches.
Each switch has a control voltage input, a common
Out / Input, and two In / Outputs. The switches are
bi-directional: they can work in both directions, so
can connect one input to either of two outputs, or
either of two inputs to one output. Voltages in the
range -8V...+8V at the O/I resp. I/O sockets can be
processed by the module.
Two LEDs show which in / output is active (ie. which
is connected to the common out / input).
From about March 2004 a new version of the A-150 is
available. This allows the full A-100 voltage range
-12V...+12V for the voltages at the O/I resp. I/O soc-
kets. The new version can be identified at the pc
board label "A-100 SYSTEM A-150 DUAL VC
SWITCH VERSION 2
" near the bus connector at the
pc board edge.
CV
O/I
A-150
CV
I/O 1
O/I
I/O 2
I/O 1
I/O 2
DUAL VCS
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- A-107 Multitype Morphing Filter (18 pages)
- A-108 6/12/24/48 Formant Filter (10 pages)
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- A-110 Standard VCO (12 pages)
- A-111-1 High End VCO (14 pages)
- A-111-5 Synthesizer Voice (22 pages)
- A-112 Sampler/Wavetable Oscillator (24 pages)
- A-113 Subharmonic Oscillator (14 pages)
- A-114 Dual Ringmodulator (6 pages)
- A-115 Audio Divider (6 pages)
- A-116 VC Waveform Processor (6 pages)
- A-117 Digital Noise / 808 Source (8 pages)
- A-118 Noise/Random (6 pages)
- A-119 External Input/Envelope Follower (8 pages)
- A-120 24dB Low Pass 1 (8 pages)
- A-121 12dB Multimode VCF (10 pages)
- A-123 24dB High Pass (no longer available) (8 pages)
- A-124 Wasp Filter (8 pages)
- A-125 VC Phaser (8 pages)