erica-synths-black-lpg

Erica Synths Black LPG

Organic Buchla-style low pass gate with built-in envelope

10 HP Eurorack module

The Black LPG is a low pass gate module by Erica Synths combining a low pass filter and VCA in one unit, producing organic, natural-sounding responses reminiscent of Buchla-style vactrol circuits. It features switchable filter, VCA, and combined modes with built-in envelope generation triggered by gate signals, giving percussive plucks, smooth swells, and expressive timbral shaping in a compact package.

Features

  • Switchable LPF, VCA, and combined Low Pass Gate modes
  • Built-in envelope generator triggered by gate input
  • Cutoff frequency control with CV input
  • Decay time control with CV input
  • Switchable linear and logarithmic envelope response
  • Envelope output for use as a modulation source
  • Gate output for chaining or triggering other modules
  • Trigger input for envelope triggering
  • CV input for additional modulation
  • Modulation output
  • Organic Buchla-inspired low pass gate character
  • Compact Eurorack format

Controls & Jacks (17)

  • Decay CV— Attenuator for external decay CV modulation
  • Cutoff CV— Attenuator for external cutoff CV modulation
  • Audio In— Main audio input signal
  • Audio Out— Filtered and gated audio output
  • Decay CV In— External control voltage for decay time modulation
  • Envelope Out— Envelope voltage output for modulation
  • Mode— Selects operating mode (e.g., LPG/VCA)
  • Trigger In— Trigger input alternative to gate
  • CV In— General purpose CV input
  • Decay— Sets the envelope decay time
  • Response— Selects envelope response characteristic (linear/exponential or similar)
  • Cutoff— Controls the filter cutoff frequency
  • Level— Attenuator for external cutoff CV modulation
  • Cutoff CV In— External control voltage for cutoff frequency modulation
  • Gate In— Gate or trigger input to initiate envelope
  • Gate Out— Gate output following input gate with envelope timing
  • ENV Out— Additional modulation output

How-To Guides

  • Percussive Pluck Bass
  • CV-Controlled Filter Sweep
  • Envelope as Modulation Source
  • Clean VCA Dynamics Control
  • Rhythmic Decay Variation
  • Self-Patched Modulation Loop
  • Gate Chain for Rhythmic Patching
  • Slow Ambient Swell

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

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