Erica Synths Fusion VCF User Manual

www.ericasynths.lv

ERICA FUSION VOLTAGE CONTROLLED FILTER MANUAL

THANK YOU FOR ORDERING
ERICA FUSION VCF MODULE!

The Erica Synths Fusion s eries modules are design ed combin­ing vac uum tubes an d semic onductors therefore they brin g
warm, power ful sound and crazy over drive possibilities of
vacuum tubes into your modular system. Erica Fusion series
consist of whole range of modules used in sound generation
and shaping circuit – pure sine VCO with unique tube wavesh­aper, VCO signal Mixer, Ringmodulator, VCF, VCA and Analogue

Delay/Chorus. Erica Fusion modules have insignificant (max

15mA) power con sumption f rom eurorack power supply unit

(PSU), but they require separate, easy to install 6VAC PSU for
tube heaters. Erica Fusion 6VAC PSU is designed to power up to

7 Erica Fusion modules and is available from Eric a Synt hs

SHOP or comes for free with purchase of 2 or more Eric a Fusion

modules.

Erica Fusion VCF is built around classical T bandpass filter
topology with a tube working simultaneously as a pr eamplifier
and filter feedback driver. As result you get a VCF wit h wide

range of sonic possibilities from warm, juicy sound to ext reme,
distorted and self-resonating screams.

Change bandpass

filter cutoff

frequency

Input attenuator adjusts

input signal level. Input

accepts signals at
virtually any level,

‘cause they are fed

directly into tube.

Adjust signal level in

order to get clean,

undistorted signal on

the output OR take

advantage of

interesting tube

distortion/overdrive

effects

Adjust external cutoff CV level

Add some resonance! The filter will self-resonate

and produce nice tube-generated sinewave

Apply Cutoff CV here; CV1
level can be attenuated with
CV Level control

Connect audio signal her

Apply another Cutoff CV here;
CV2 is not attenuated

same as for IN1. As bonus to VCF,

you get tube mixer!

Take output signal from here

Another audio signal here!

Signals are mixed on the tube

Inverted output signal is

available here