Discontinued
modules
Blinds
Quad VC-Polarizer

Remote-controlled Shades

Blinds is a 4-channel voltage-controlled signal polarizer.

Each channel consists of a polarizer circuit, also known as a four-quadrant multiplier. This circuit acts like a VCA, except that a negative control voltage will cause the output signal to be inverted, instead of being silenced.

Blinds’ outputs are daisy-chained, allowing adjacent groups of 2, 3, or all 4 channels, to be mixed together.

12HP
25mm
+12V:70mA
-12V:70mA

A hub for your modulations

  • Scale, invert and offset up to four modulation signals.
  • Mix up to four CVs or audio sources.
  • Multiply (ring-modulate) two audio sources, with adjustable carrier rejection.
  • “who can do more can do less”: each channel can be used as a plain VCA.

Specifications

  • All inputs DC-coupled.
  • All inputs handle audio-rate signals.
  • Input impedance: 100k for all inputs.
  • CV offset range: +/- 5V.
  • Gain scale: linear, a +5V CV translates to a gain of 1.
  • Gain range: +/- 2.