WMD - Triple Bipolar VCA

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€ 199,00 (including VAT)
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WMD Triple Bipolar VCA

Intoducing the WMD Triple Bipolar VCA, the input side expansion for our Phase Displacement Oscillator. This module provides dedicated inverting/polarizing/bipolar amplitude modulating inputs normaled to the Phase Modulation inputs on the PDO.

A bipolar VCA is like a normal VCA when operated with positive control voltage. But when using a negative control voltage, the output will swing back through zero amplitude and the output will be inverted. This produces deeper modulation than a normal VCA.

The Triple Bipolar VCA is also designed to be used as a standalone module, it does not require the PDO to operate.

Features:

  • Three Bipolar VCAs
  • Normaling to PDO
  • Linear Response
  • Bipolar Attenuator for CV
  • Mix Output Sums All Three VCAs
  • Bi-color Signal LEDs
  • "-" Input for Mix Through Zero
  • Skiffable PCB Design
  • 8 HP
  • +80mA/-75mA Current Consumption

Controls and I/O

+ In - This is the normal input for each VCA channel. It drives the inverting side of the Bipolar VCA. These inputs are normaled from outputs on the PDO.

- In - This is the second input for the VCA channel. Normaled through this jack is the inverted signal from the + Input. Plugging in here converts the channel from a Bipolar VCA to a dual VCA. Negative control voltages will open the - side, and positive control voltages will open the + side. This allows you to use two modulation sources and alternate between them, while still retaining control over amplitude.

CV - This input jack drives the CV knob. It can handle unipolar or bipolar signals.

Out - This is the output of each VCA channel. They are normaled to the Phase Modulation inputs on the PDO.

Bias Knob - Sets the manual gain for the VCA. Centered will have a zero output (with 0V control voltage).

CV Knob - This knob is a bipolar attenuator for the signal applied to the CV jack. Spin clockwise from center for positive CV interactions, counterclockwise to invert the CV.

Mix Out - This output jack mixes the signals from each VCA.

Other Notable Things

The Triple Bipolar VCA is 8HP.

Current consumption is 80mA for the +12 rail; 75mA for the -12 rail.

The depth from the back of the panel is roughly 25mm.

Manual

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