Erica Synths Black DUAL VCF Manual

THANK YOU FOR CHOOSING ERICA
SYNTHS BLACK SERIES MODULE!
Erica Black Series include high-end, unique
functionality and superior quality modules.
Only the best, highest quality components
are used, all inputs and outputs are
protected against undesired overvoltage.
Erica Black series consist of range of
modules that are needed to put together
entire synth. Enjoy!
Erica Black VCF is dual multimode fi lter
with CV control over cutoff and resonance
for serious modular patches. The core of
the VCF is highly stable, custom multimode
VCF chip AS3320 (produced in Riga, btw).
It can be used as two independent VCFs
with simultaneous HP, BP and LP outputs,
controls can be linked for stereo application
and both VCFs can be chained in series or
parallel to the summing output for ultimate
modulations. Bonus feature – 16 band
spectrum analyser – gives visual feedback
on what happens on summing output.
FEATURES:
Two identical multimode VCFs
Simultaneous HP, BP and LP outputs
Summing output
Serial or parallel VCF routing to the
summing output
CV control over Cutoff and Resonance
CV level attenuverters
Link switch for controlling both VCFs with
one cutoff or resonance knob
16 band spectrum analyser
Skiff -friendly design
TECHNICAL SPECIFICATIONS:
Audio output amplitude .......................10Vptp
CV input (full sweep) ............................10Vptp
Panel width ...............................................18HP
Module depth .......................................35mm
Power consumption .........................................
................................ 40mA@+12V, 36mA@-12V
16 band spectrum analyser
gives visual feedback on
signal that passes through
VCFs and appears on
SUM OUT
1kHz
Select what fi lter mode
of VCF1 is assigned to
SUM OUT. Same goes with
the switch on the VCF2
Adjust audio input level
IN1 LVL
with this knob!
These are Resonance
and Cutoff attenuverters
IN1
These are audio and
CV inputs
HP1 OUT BP1 OUT
These are multimode
VCF outputs – signals
from them are available
simultaneously, and mode
switch doesn't eff ect these
BLACK DUAL VCF
Switch in LINK position allows to
control both VCFs with Cutoff 1 and
Resonance1 knobs. Cutoff 2 and
Resonance2 knobs are disabled
CUTOFF1 CUTOFF2
LINK
7kHz 10kHz
HP HP
BP BP
LP LP
RESONANCE1 RESONANCE2
RESO1 CV C-OFF1 CV IN2 LVL RESO2 CV C-OFF2 CV
R1 CV C1 CV IN2 R2 CV
LP1 OUT SUM OUT HP2 OUT BP2 OUT LP2 OUT
BLACK DUAL VCF
This is output of both
VCFs summed
Adjust cutoff frequency
manually for both VCFs!
16kHz
Adjust resonance for both
VCFs manually!
This switch defi nes, how
C2 CV
VCFs are chained to the
SUM OUT – in series
or parallel