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Befaco Hexmix VCA – DIY Kit

Befaco Hexmix VCA – DIY Kit

Regular price €174,00
Sale price Regular price

Product details

Main features

  • Six VCAseach channel has signal input, CV input, output, response and level controls
  • Response curveper-channel sweep from exponential through linear to logarithmic
  • Mixer modeswitch sums all six channels at output 6; patched outputs leave the mix
  • Normalled CVunpatched CV inputs default to 10 V, so the VCA stays fully open

Overview

The Befaco Hexmix VCA DIY Kit is the self-build version of Befaco's six-channel Eurorack VCA. It fits six voltage-controlled amplifiers with adjustable response curves and a switchable mixer into 14 HP. It suits builders who want several VCAs and a compact mixer in one module, either on its own or as part of Befaco's Hexmix system with the Hexmix and Hexpander.

  • Six VCA channels: each has a signal input, CV input, output, response control and level control.
  • Variable response: per-channel control from fully exponential at minimum, through linear at centre, to fully logarithmic at maximum.
  • Post-VCA level: each channel's level control attenuates the signal after its VCA.
  • Normalled CV: an unpatched CV input defaults to 10 V, which holds the VCA fully open so the level control acts as a volume knob.
  • Switchable mixer: sums all six channels at output 6, and patching a channel's output removes that channel from the mix.
  • Complete kit: includes all parts for a finished module, plus a power cable and four Befaco Knurlies M3 rack screws.

The response control changes how each channel reacts to control voltage. Befaco's manual describes linear as the setting that preserves a signal's natural dynamics. Exponential gives smoother control and works well with modulation sources, at the cost of some dynamics and gain. Logarithmic is the aggressive setting, with a strong attack and sharp decay. Use it for hard-hitting percussion or for realistic audio crossfades. Because the curve is set per channel, one module can shape a percussive envelope on one channel and handle gentle modulation on the next.

A switch at the bottom right sets mixer mode. With the switch on, output 6 carries the sum of all six channels. With it off, channel 6 works as an independent VCA. Any channel can be taken out of the mix by patching a cable into its own output, while the rest stay in the sum. An expansion port on the back links the module to the Befaco Hexmix. Keeping channel 6 independent is handy in that setup.

Channel inputs accept signals up to ±10 V, the CV inputs expect 0 to 8 V, and outputs reach up to ±8 V. The front panel is heat-treated aluminium. The module was designed in Barcelona, where the kits are also prepared. Befaco publishes an assembly manual, schematic, parts list and interactive build guide for the kit.

Specifications· 23 details

Format

Format
Eurorack DIY kit
Width
14 HP
Part number
DIY016
Included
All parts for a complete module, power cable, 4 Knurlies M3 rack screws

Inputs & outputs

Signal inputs
6
CV inputs
6
Outputs
6 (output 6 doubles as mix output)
Input range
±10 V
CV input range
0–8 V
Output level
Up to ±8 V
Expansion
Rear expansion port for Befaco Hexmix

Controls

Response
6, exponential – linear – logarithmic
Level
6, post-VCA
Mix switch
Sums all channels to output 6
Front panel
Heat-treated aluminium

Power

Power draw +12V
50 mA
Power draw +5V
0 mA

General

DIY
Yes
Functions
Mixer, Utility, and VCA
Height
3U
Instrument material
Aluminum
Synthesizer form factor
Control voltage or gate connectivity

About the brand

Befaco

Barcelona-based maker of open-source Eurorack modules, sold assembled or as DIY kits. Known for experimental voices such as Oneiroi, hands-on build workshops and designs released under a Creative Commons licence.
Origin
ES
Founded
2010
Products
127
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