make-noise-lxd

Make Noise LxD

Dual vactrol low pass gate with acoustic soul

4 HP Eurorack module

The LxD is a dual-channel, vactrol-based Low Pass Gate that simultaneously controls amplitude and frequency content, functioning as a VCFA (Voltage Controlled Filter Amplifier). CH1 offers a mildly-resonant 12dB/octave response while CH2 offers a non-resonant 6dB/octave response, with CH1 output normalled to CH2 input for classic VCF-into-VCA series processing. Its vactrol heart gives it an organic, natural-sounding character ideal for percussive plucks, rings, and acoustic-like transients.

Features

  • Dual-channel vactrol-based Low Pass Gate
  • CH1: 12dB/octave mildly-resonant low pass filter response
  • CH2: 6dB/octave non-resonant low pass filter response
  • Simultaneous amplitude and frequency control via single CV input per channel
  • CH1 output normalled to CH2 input for series VCF-into-VCA operation
  • Strike input per channel for pinging, plucking, and percussive triggering
  • Direct-coupled signal path throughout
  • Signal inputs accept audio or control voltages up to 15Vpp
  • Outputs up to 10Vpp depending on source and settings
  • CV input range 0V to 8V per channel
  • Strike inputs expect 8V to 10V gate or clock signals
  • Extremely low noise and low distortion

Controls & Jacks (8)

  • Control Signal Input CH1— CV input for Channel 1's vactrol gate
  • Strike Input CH1— Gate input for striking/pinging the vactrol
  • Signal Output CH1— Output of Channel 1's 12db/Octave low pass gate
  • Signal Input CH2— Direct coupled signal input for the 6db/Octave LPG circuit
  • Control Signal Input CH2— CV input for Channel 2's vactrol gate
  • Strike Input CH2— Gate input for striking/pinging the vactrol
  • Signal Output CH2— Output of Channel 2's 6db/Octave low pass gate
  • Signal Input CH1— Direct coupled signal input for the 12db/Octave LPG circuit

How-To Guides

  • Classic Percussive Pluck
  • Classic Monosynth Lead
  • Strike Ping Percussion
  • Accent Parameter in Sequencing
  • Dynamic FM Index Control
  • FM Pings with Dual-Stage Shaping
  • Variable Modulation Index via CV Processing
  • Dual Independent Percussive Voices
  • Gated Modulation Burst

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

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