ajh-synth-low-fat-vcf

AJH Synth Low Fat VCF

A 2 HP voltage-controlled high-pass filter with switchable 6 dB and 12 dB slopes.

2 HP Eurorack module

A compact voltage-controlled high-pass filter for removing excessive low frequencies or complementing other filters. Its cutoff can be controlled manually or by attenuated external CV, and its response switches between one-pole and two-pole slopes.

Features

  • Manual or externally voltage-controlled cutoff frequency, with attenuation for the external CV.
  • Switchable 6 dB-per-octave one-pole and 12 dB-per-octave two-pole responses.
  • Can be combined with a low-pass filter to form a band-pass filter with a customizable passband.
  • Can track a 1 V/octave pitch CV when F-CV Amount is set appropriately, keeping the filtering consistent as oscillator pitch changes.

Controls & Jacks (6)

  • Frequency— Manually sets the high-pass filter cutoff frequency.
  • F-CV Amount— Attenuates the control voltage received at the F-CV Input before it modulates the cutoff frequency.
  • Input— Accepts the audio signal to be processed by the high-pass filter.
  • Output— Outputs the high-pass-filtered audio signal.
  • F-CV Input— Accepts an external control voltage for modulating the filter cutoff frequency; with suitable attenuation it can follow a 1 V/octave pitch s
  • Slope— Selects either the gentle 6 dB-per-octave one-pole response or the steeper 12 dB-per-octave two-pole response.

How-To Guides

  • Remove Excessive Low End
  • Track a Pitch CV

Explore the interactive Low Fat VCF panel on BleepDex — tap any control to learn what it does.

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