Doepfer A-143-3 Quad LFO User Manual download pdf

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DOEPFER System A-100 Quad LFO A-143-3

Fig. 1: A-143-3 Controls and Outputs

1. Introduction

Module A-143-3 Quad LFO is a low-cost four-fold

modulation oscillator and includes four independent low

frequency oscillators (LFO's), which produce cyclical

control voltages in a wide frequency range.

Three waveforms are available for each LFO: triangle,

square and sawtooth. The frequency of the sawtooth

output is twice the frequency of the other outputs.

The LFO's can be used as modulation sources for any

control voltage input of other modules - for instance

modulating the pulse width or frequency of a VCO,

modulating the cut-off frequency of a VCF or the phase-shift

of a VCP, amplitude modulation with a VCA, delay time of a

BBD module, parameters of a voltage controlled wave

shaper/multiplier, or any other control voltage input.

A three-way switch let’s you select three frequency ranges,

spanning from about two cycles per minute at the lowest, to

moderate audio frequency at the highest.

The module includes four identical units.

1 2 3 4

Summary of Contents

Page 1 - 1. Introduction

DOEPFERDOEPFERDOEPFERDOEPFER System A-100 Quad LFO A-143-31Fig. 1: A-143-3 Controls and Outputs1. IntroductionModule A-143-3 Quad LFO is a low-cost f

Page 2

Quad LFO A-143-3 System A-100 DOEPFERDOEPFERDOEPFERDOEPFER22. OverviewFig. 2: A-143-3 front panelControls:1 Frequ. : frequency control2 Range: frequen

Page 3 - 3. Controls and Outputs

DOEPFERDOEPFERDOEPFERDOEPFER System A-100 Quad LFO A-143-333. Controls and Outputs1 FrequencyThis control adjusts the frequency of the LFO within the

Page 4 - 4. User Examples

Quad LFO A-143-3 System A-100 DOEPFERDOEPFERDOEPFERDOEPFER44. User ExamplesAn LFO can be used for all sorts of different modulations:• VCO Pitch/Freq

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Doepfer A-143-3 Quad LFO User Manual

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Summary of Contents

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