Befaco

Notes: Voltage-Controlled Voltage Processor

A*B+C is the ultimate utility for audio and control voltage. It performs multiplication, addition, and attenuation, providing a simple way to create complex signal interactions and timbres.

It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result.It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result.

By combining different blocks, many functions can be achieved:

Audio Processing:

Four-quadrant amplitude modulation (ring modulation)
Linear VCA
Signal mixer
2x gain amplifier
Phase inverter
Attenuator

CV Processing:

Voltage-controlled attenuator
CV mixer
Attenuator
Inverter
VCA
DC generator

Features

DC Coupled
Signal LED Indicators
B and C INs normalled to 5

Specs

Current Draw: +12V: 50mA, -12V: 50mA +5v : 0mA
Width: 6HP
Depth: Assembled version 25 mm
Depth: DIY version 35 mm
Designed, kits prepared and assembled in Barcelona.

Notes: The EVEN VCO is a voltage-controlled oscillator that offers stability and high precision tuning over 10 octaves. A redesigned temperature compensation circuit maintains the oscillator stable against voltage and temperature drops.

Specifications:

Current needs: +12V: 36mA, -12V: 26mA
Width: 8 HP
Depth: 22mm, (28mm DIY) including power connector
Aluminium, heat-treated front panel.
Designed, kits prepared and completed modules assembled in Barcelona.