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Befaco Slew – DIY Kit

Befaco Slew – DIY Kit

Regular price €65,00
Sale price Regular price

Product details

Main features

  • Rise/fall fadersindependent upward and downward slew times, adjustable with one hand
  • Shape controllinear to time-compensated portamento response
  • Slope detectorRISE and FALL gate outputs follow the output voltage direction
  • Slew CV0 to +10 V input assignable to rise, fall or both

Overview

The Befaco Slew is a 4 HP Eurorack lag processor and slope detector, supplied here as a DIY kit you assemble yourself. It limits how fast a control voltage can change, which turns stepped sequences into glides. It also outputs gates that show whether the voltage is rising or falling. It suits patchers who want portamento, acid-style slides, smoother modulation or simple envelopes from gates, and builders who like to solder their own modules.

  • Separate rise and fall faders: set upward and downward slew independently. A higher fader gives a longer slew.
  • Shape control: runs from a linear response to a curve that speeds up the further the input is from the output, for time-compensated portamento.
  • Three speed ranges: a range switch selects fast, medium or slow slew times.
  • CV over slew time: a three-way selector routes the CV input to rise, fall or both, and the faders then act as attenuators.
  • Slope detector: dedicated RISE and FALL gate outputs follow the direction of the output voltage.
  • Accurate pitch tracking: tracking error is stated as under 1 mV, so glides stay in tune.

On a sequencer pitch line, the Slew adds glide with independent up and down times. With the shape control turned clockwise, long jumps take roughly as long as short ones. Patch a gate into the signal input and it becomes an attack-sustain-release envelope. The rise and fall faders set the attack and release. The signal input accepts −10 V to +10 V, so it also works on bipolar modulation.

The slope detector's sensitivity follows the slew time. At the fastest settings it reacts to very small movements. If ripple produces unwanted gates, Befaco recommends increasing the slew time.

Specifications· 20 details

Format

Format
Eurorack
Width
4 HP

Inputs & outputs

Signal In
−10 V to +10 V
CV In
0 to +10 V (slew time)
Signal Out
Slewed output
Rise out
Gate while output is rising
Fall out
Gate while output is falling

Controls

Rise
Fader
Fall
Fader
Shape
Linear to time-compensated response
Range
3-position switch (fast, medium, slow)
CV destination
3-position selector (rise, both, fall)
Pitch tracking error
< 1 mV

Power

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

General

DIY
Yes
Functions
Modulation
Height
3U
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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