Pulsers

A-108 48 dB Low Pass / Band Pass

6/12/24/48 dB transistor ladder low pass (VCF8)

Doepfer · 12 HP · U3

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A-108 VCF8
6/12/24/48dB Lowpass
Outputs
BP
CV1
Frequ.
48dB LP
CV2
CV2
24dB LP
CV3
CV3
12dB LP
Audio
In
Audio
Level
6dB LP
Feedb.
Emph.

Panel · 61 × 128.5 mm Drag to explore →

Description

Doepfer's eight-stage transistor ladder low pass filter: the slopes 6, 12, 24 and 48 dB per octave on four outputs at once, a band pass output, and an external feedback input in the resonance path.

Key features

  • Eight-stage transistor ladder (Moog ladder); outputs 6, 12, 24 and 48 dB LP from the factory, any stage selectable inside
  • Band pass output (BP)
  • Frequency set by hand (Frequ.) and by three CV inputs, CV2 and CV3 with their attenuators
  • Emphasis (resonance) up to self-oscillation, which makes it a sine oscillator
  • Feedback input normalled to the 48 dB output: another module (a VCA, a phaser...) can be inserted in the resonance path
  • Sensitive audio input with its level control: distortion is possible even with A-100 levels

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