Aperture Variable Width Bandpass Filter - 12HP

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Item: N13-5300

Availability: In stock

Aperture Variable Width Bandpass Filter - 12HP


The Aperture from WMD is a wild sounding bandpass filter capable of anything from standard bandpass filtering all the way to squelching high resonance self oscillating FM sounds. With precission controls for Frequency, Width, High Pass Resonance, Low Pass Resonance, Input Level, Feedback, CV Frequency , Dry/Wet, and CV Width and tons of CV input control, users can achieve some otherworldly, space demon summoning tones and more.


  • 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

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  • 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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