Doepfer DIY Synth do-it-yourself analog synthesizer - Manual (Page 6)

DIY Synth Kit Page 6 User's Guide
The kit is planned for customers who are familiar with electronic basics as the kit does not
include the controls, switches, sockets, power supply and the case. These elements have to
be added and wired by the. The customer can choose the desired size, shape, type and
color of these elements (e.g. rotary potentiometers or faders, small 3.5 mm jack sockets or
¼" sockets or banana type, small or large knobs and switches and so on). Even the type of
wiring is free: the range goes from a pre-wired standard synth (VCO-VCF-VCA type) up to a
fully patchable small modular system. Two or more of the kits can be combined to obtain
more VCOs, ADSRs, LFOs, VCAs or VCFs, e.g. to built a more complex pre-wired or
modular synth. We think about a DIY Synth expansion board that may contain a noise
generator, S&H, ring modulator, mixer, maybe Midi/USB interface and multi-effect unit, and
other often used synthesizer units.
A stabilized symmetrical 12V power supply (i.e. -12V, GND, +12V) with at least 150 mA
current is required.
The additional working time and required skills to build a working unit from the kit should not
be underrated ! One should count at least on one weekend, even if you are an experienced
hobbyist. To obtain all features about 25 potentiometers, 20 sockets and several switches
have to be mounted into a suitable housing and wired faultless. We ask for your
understanding that we cannot offer the service to troubleshoot a customer’s assembly. The
DIY SYNTH pc board comes assembled and tested.
We do not offer complete units but only the pc board ! The pictures shown on our website are
application examples for the DIY synth board. Assemblies like these are not available from
us! Please don't ask !
A cable set is available as an option (two ribbon cables with 16 pins and five with 10 pins,
each ~ 50 cm long, with assembled dual row female connectors on one side, the other side
of each cable is open). It enables to connect/disconnect the DIY board without any soldering
from the customers assembly. As standard dual row female connectors (IDC with 1/10" =
2.54 mm pitch) are used, experienced users will have no problems to assemble these cables
themselves.
We offer also a tempco option which stabilizes the VCO while the temperature changes.
The version without temperature compensation is fine for experimental sounds or
drum/percussion applications where the exact 1V/oct scale of the VCO is not essential. For
applications where the synth has to be played by a CV keyboard or Midi/CV interface the
version with temperature control is recommended. This version has a good 1V/octave
tracking over about 6 octaves in the range 40Hz ... 5kHz after ~ 20 minutes heating period.