Erica Synths Fusion Series Manual

THANK YOU FOR ORDERING
ERICA FUSION VCO 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/Chorus.
Conventional wisdom says that
vacuum tubes have nonlinear
characteristics, and therefore VCOs
based on vacuum tubes need special
tuning for each note.
Erica Synths Fusion VCO is special
kind of VCO – it fuses good tuning
of digital VCO with warm, unique
sound of vacuum tubes that work in
suboscillator circuit. The module has to
vacuum tube based suboscillators: -1
and -2 octaves with plenty of mixing
opportunities for amazing sonic results.
If you wish to go really low frequencies
and have a sound that sets your
modular system apart from mass –
this is exactly module, you need!

FEATURES:

3 basic waveforms with VC morphing
Good 1V/oct tuning
Vacuum tube based suboscillators -1 and -2 oct
Manually and CV controlled -1/-2 oct mixing
Adjustable suboscillator waveshape
Dry/Wet (VCO/suboscillators) mixing
Passive Lowpass filter for extreme subbass sound
Audio input
Use waveshape Choose one of principal
potentiometer to
morph/adjust waveforms.
12 'o'clock setting gives
you waveform, selected
by the switch, and then
morphing is applied:
• Sine morphs from
logarythmic wave to
overdriven sine
• Triangle morphs from
ramp to sawtooth
• Pule has adjustable PW –
from 5% to 95%
Dry/Wet potentiometer
provides smooth mix between
pure VCO and pure tube
suboscillator sound
Adjust -1 octave
suboscillator waverofm from
more harmonic rich CW to
almost sine CCW
AUDIO IN
Adjust a mix between
-1 octave and -2 octaves
suboscillators
Patch external VCO (simple Apply CV to fade
waveforms will work best) between -1oct
to route it to suboscillator and -2oct mix
circuit. Internal VCO will be
automatically disconnected

TECHNICAL SPECIFICATIONS:

Audio input level: .....................................................................................................up to 20V ptp
VCO range: ......................................................................................................................... C1 – C8
Max Output level: ...............................................................................................................10V ptp
Panel width: ............................................................................................................................ 24HP
Module depth: ..................................................................................................................... 35mm
Power supply: .................bipolar +-12V , eurorack standard and/or Erica Synths 6VAC PSU
Power consumption:
Tube heater PSU configuration: .......................... 60mA@+12V, 30mA@-12V, 300mA@6VAC
Eurorack PSU configuration: ..........................................................215mA@+12V, 185mA@-12V
ERICA FUSION VCO
waveforms of VCO
FUSION VCO
-1 -2
SUBMIX CV 1V/OCT FM IN WAVE CV
Connect 1V/oct Patch
signal to control
FM CV
VCO frequency here
(NB – start-up power consumption for few seconds is +-250mA)
Set the VCO frequency
manually
Adjust FM level with this
potentiometer
Use COLOUR potentiometer
to filter off higher harmonics
for extreme bass sound and
almost pure sine waveform
on the output. Full CCW
setting works best at really
low frequencies –
C1 and below
Adjust -2 octave
suboscillator waverofm from
more harmonic rich CW to
almost sine CCW
VCO OUT MIX OUT
This is master output. Get
that fat tube sound here
This is dry VCO
Apply wave output, no
morphing CV here. suboscillator is
It will be added added
to waveshape
potentiometer
setting