Doepfer DIY Synth do-it-yourself analog synthesizer - Manual (Page 12)

DIY Synth Kit Page 12 User's Guide
JP3: VCF, VCA and LFO connections
JP3 contains some VCF, VCA and LFO terminals.
ribbon cable pin header top view
Function Explanation Remark / Recommendation
LFO RECTANGLE LFO rectangle output about 10V level (+/- 5V)
VCF LOWPASS VCF lowpass Output Usually connected to a socket labelled
"VCF Lowpass", can be connected
additionally to a potentiometer for
lowpass/notch/ highpass control
VCF CV2 Control voltage input #2 for
VCF frequency Sensitivity: roughly 1V/octave, e.g. for
FM input (socket with attenuator, e.g.
normalled to ADSR output)
VCF CV1 Control voltage input #1 for
VCF frequency Sensitivity: roughly 0.5V/octave, e.g. for
manual frequency control
VCA CV Control voltage input for
VCA loudness Range about 0…+5V, usually connected
to a socket labelled "VCA CV In" with
attenuator which is normalled to the
ADSR output, if more VCA CV inputs are
required VCA CV SUM has to be used
(see JP7)
LFO POT CCW CCW terminal of the LFO
frequency control
LFO POT CENT Center terminal of the LFO
frequency control
LFO POT CW CW terminal of the LFO
frequency control
Connected to LFO control (1M log
recommended)
GND
GND