VOLTAGE
CONTROLLED FILTER
IN1 LEVEL
IN2 LEVEL
IN3 LEVEL
CUTOFF
RES
ONANCE
CV LEVEL
IN1
IN2
IN3
CV IN
MIX OUT
VCF OUT
24dB
12dB
Thank you for ordering
erica fusion Vcf module!
The Erica Synths Fusion series modules
are designed combining vacuum tubes
and semiconductors therefore they bring
warm, powerful sound and overdrive
possibilities of vacuum tubes into your
modular system. Erica Fusion series
consist of range of modules used in
sound shaping circuit – VCO, Mixer, real
Ringmodulator using audio transformers
and germanium diode ring, VCF, VCA
and Analogue Delay/Flanger.
24dB/12dB Fusion VCF is our take on
the four pole lowpass filters. Each
side of double triode drives signal
between 2nd and 3rd stage of the filter,
while germanium diodes are used to
limit output signal. Result ultimately
deep sounding VCF with unique
character. Ingenious resonance volume
compensation circuit and filter slope
selection make this filter ideal for live
performances. Bonus feature – 3 input
mixer with dedicated mixer output. Try
patching the MIX OUT into one of mixer
inputs, increase input level until the mixer
goes into self-oscillation and use the
filter to alter the drone, you have! The
Fusion VCF is an instrument on it’s own!
feaTures
:
4 pole lowpass resonant VCF with tube
drive between stages
Three input signal mixer
Selectable 24db/12dB filter slope
Signal drop compensation, when
resonance is increased
Germanium diode based output
signal limiter
Technical sPecificaTions:
Audio input level: ..............................................................................................up to 20V ptp
CV input level (full cutoff span): .......................................................................... -10V - +10V
Panel width: ......................................................................................................................14HP
Module depth: .............................................................................................................. 35mm
Power supply: ...........b-12V, eurorack standard and/or Erica Synths 6VAC PSU
Power consumption:
Tube heater PSU configuration: ................... 35mA@+12V, 20mA@-12V, 300mA@6VAC
Eurorack PSU configuration: .................................................... 35mA@+12V, 170mA@-12V
(NB – start-up power consumption for few seconds is -250mA)
This is VCF cutoff control
Select filter slope!
Adjust cutoff CV level
here
This is cutoff CV input
This is VCF output,
obviously
Set desired audio input
levels!
Bonus feature –
dedicated mixer
output – you may want
to patch mixed signal
to other modules. Try
patching the MIX OUT
into one of mixer inputs,
increase input level
until the mixer goes into
self-oscillation and use
the filter to alter the
drone, you have!
These are audio mixer
inputs! For better
performance they are
independently buffered
Set desired resonance
level! The VCF
self-oscillates, therefore
you can have pretty
crazy sonic results
Erica Fusion VcF
