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Doepfer DIY Synth do-it-yourself analog synthesizer User Manual

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DIY Synth Kit

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User's Guide

Table of contents

Important note ..........................................................................................................................2
Electrical safety / EMC compatibility ........................................................................................2
Warranty...................................................................................................................................3
Table of contents......................................................................................................................4
Introduction...............................................................................................................................5

DIY Synthesizer kit (pc board schematics)...........................................................................7

Connecting controls and sockets .............................................................................................8

JP1: Power Supply .............................................................................................................10
JP2: VCO and VCF connections ........................................................................................11
JP3: VCF, VCA and LFO connections................................................................................12
JP4: LFO and ADSR connections ......................................................................................13
JP5: LFO and ADSR connections ......................................................................................14
JP6: LFO, ADSR and Slew Limiter connections.................................................................15
JP7: VCO, VCF and VCA connections ...............................................................................16
JP10: Tempco-Option.........................................................................................................17
Auxiliary terminals...............................................................................................................17
Trimming potentiometers ....................................................................................................17

Application Example...............................................................................................................18

How to use the summing inputs..........................................................................................20
Attenuating signals .............................................................................................................21
Generating manual controlled voltages ..............................................................................21
Variable resistors ................................................................................................................21
Other applications of potentiometers ..................................................................................22
Controlling the ADSR parameters ......................................................................................22
Controlling the LFO frequency............................................................................................23