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WMD Aperture Variable Width Bandpass Filter

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WMD Aperture

WMD’s Aperture module is a crazy band-pass filter that generates everything from traditional band-pass filtering to high resonance FM style sounds. The module features dedicated controls for Frequency, Width, Low- and High-Pass Resonance, Input Volume, CV Frequency, Feedback, Dry/Wet mix, and CV Width. Additionally, each crucial parameter features CV control, so users can modulate the module’s insanity in sync with their own. 

Aperture Features

  • Variable bandwidth via tactile and CV controls
  • Eight pole filter core
  • Independent resonance and self oscillation of both sides of the filter with CV
  • Feedback circuit with two modes and CV 
  • Input level VCA
  • Additional CV for opening the band either side of Center
  • V/oct tracking
  • Temperature compensated
  • Dry / Wet mix for parallel filtering sounds
  • Current: +12V = 120mA, -12V = 100mA 
  • Depth: 25mm including power
  • Width: 12 HP
  • Height: 3U Eurorack
  • Input Gain: -90dB to +6dB
  • Nominal Input: 10Vpp
  • HPF Cutoff Freq Range: 0.5 Hz to 50kHz
  • LPF Cutoff Freq Range: 0.1Hz to 25kHz
  • Poles: 8
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