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doepfer

System A - 100

Voltage Controlled Panning

A-134

1. Introduction

Module A-134 (PAN) is designed to provide voltage-

controlled panning

for audio signals.

It can equally well pan between inputs (with two in-

puts going to one output) and

between outputs -

one

input going to two outputs.

As well as the manual mode, panning can also be

voltage-controlled. Two CV inputs (one with an at-

tenuator control are included for that purpose.

Two

LEDs

give a visual indication of what’s hap-

pening to the signals.

To set the incoming audio signals at the right level,

both Audio Inputs have

attenuators

A-134

VC Panning Module

PanCV 1

Left

Out

CV 2

Audio In 1

CV 2

Lev 1

Lev 2

Audio In 2

Mix

Out

Right

Out

Summary of content (10 pages)

PAGE 1
System A - 100 doepfer Voltage Controlled Panning A-134 1. Introduction A-134 VC Panning Module CV 1 Pan Module A-134 (PAN) is designed to provide voltagecontrolled panning for audio signals. It can equally well pan between inputs (with two inputs going to one output) and between outputs - one input going to two outputs. As well as the manual mode, panning can also be voltage-controlled. Two CV inputs (one with an attenuator control are included for that purpose.
PAGE 2
A-134 Voltage Controlled Panning System A - 100 2.
PAGE 3
System A - 100 doepfer 3. Basic layout The A-134 provides both manual and voltagecontrolled panning. It basically contains two matched linear VCAs like the A-130, and a mixer (see fig. 1). CV Audio In 1 Mix Audio In 2 VCA 2 In output panning mode, the signal present at audio input 1 (§) is sent to the left (%) and right (/) audio outputs at levels determined by the pan control 2 and/ or the control voltage/s input to the module.
PAGE 4
A-134 Voltage Controlled Panning Pan LEDs System A - 100 2 Pan Mix Output 0 Just the signal from Audio In 1 5 Equal amounts of signal from Audio In 1 and Audio In 2 10 Just the signal from Audio In 2 Table 1: Input mixing mode In this mode, the left LED monitors the left audio output %, the right LED the right audio output /. The LEDs indicate the relative position in the stereo soundstage produced by the two audio outputs.
PAGE 5
System A - 100 doepfer Voltage Controlled Panning A-134 5. In- / Outputs 6. User examples ! CV 1 There are a whole load of possibilities for using Module A-134, principally because any signal you think of can be used as a control voltage: • " CV 2 Inputs ! and/or " are for the control voltages to be used for voltage-controlled panning. H The actual amount of panning is governed by the sum of the voltages produced by the pan control 2 and CV control 3.
PAGE 6
A-134 Voltage Controlled Panning System A - 100 CV • Sequencer Panning controlled by voltages put out by a sequencer such as the A-155. In the patch in fig. 5, the control voltages are produced by the lower row of the A-155, so that as the sequence runs, each note is positioned at a different place in the stereo soundstage. (Lessening the abrupt changes between voltages can be achieved by using Post Out 2 on the A-155.
PAGE 7
System A - 100 doepfer Audio In 1 AudioSignal VCFS PAN Up Voltage Controlled Panning A-134 Mix Out PAN Audio Audio In 2 CV In A-118 Right Out CV In CV In Colored Left Out Audio In 1 Random Out A-148 A-178 CV Trig. In Gate Audio 1 Audio 2 Fig. 3: Randomly making a sound more harsh or rasping each time a note is pressed. A-178 Fig. 4: Audio In 1 PAN Audio In 2 Mix Out CV In CV Panning using the theremin module.
PAGE 8
A-134 Voltage Controlled Panning System A - 100 doepfer Clock A-155 1 2 3 4 5 6 7 8 # # Trig. 1 Glide Crtl. 1 Gate Pre Out 1 VCF VCO VCA Left Out Audio In 1 PAN Post Out 2 CV In ADSR Fig. 5: Output panning using a sequencer.
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doepfer System A - 100 Voltage Controlled Panning A-134 9
PAGE 10
A-134 Voltage Controlled Panning System A - 100 doepfer 6. Patch-Sheet The following diagrams of the module can help you recall your own Patches. They’re designed so that a complete 19” rack of modules will fit onto an A4 sheet of paper. Photocopy this page, and cut out the pictures of this and your other modules. You can then stick them onto another piece of paper, and create a diagram of your own system.