ER-VCF-02

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ER-VCF-02 f-b 720px.jpg

Features

  • This is a diode ladder VCF - original design by Moritz Klein, with a couple of small adaptions made by T Killa
  • There are two CV inputs
    • CV1 with an attenuator to control the amount
    • CV2 with an attenuverter so it's possible to invert the signal as well as controlling the amount of modulation
  • The filter is a low-pass filter only
  • 3U tall
  • 6 HP (30mm) wide
  • Uses ER-PROTO-02 controls cards

Credits

Pots/Connectors

Front Panel Pots

  • POT RV1 - CV1 Attenuator adjustment
  • POT RV2 - CV2 Attenuaverter adjustment
  • POT RV3 - Not used
  • POT RV4 - Not used
  • POT RV5 - Resonance adjustment
  • POT RV6 - Cutoff Frequency adjustment

POT RV1 - CV1 Attenuator adjustment

POT RV2 - CV2 Attenuaverter adjustment

POT RV5 - Resonance adjustment

POT RV6 - Cutoff Frequency adjustment

Front Panel External Connectors

  • J3 - Audio In
  • J4 - CV Amount
  • J5 - Attenuaverter input
  • J6 - Audio Out

J3 - Audio In

  • 3.5mm mono connector
  • Tip - signal

J4 - CV Amount

  • 3.5mm mono connector
  • Tip - signal

J5 - Attenuaverter input

  • 3.5mm mono connector
  • Tip - signal

J6 - Audio Out

  • 3.5mm mono connector
  • Tip - signal

Analog Card Connectors

J1 - Eurorack Power

ER-VCF-02-DB J1.PNG

J2 - POT (from Controls card)

ER-VCF-02-DB J2.PNG

J3 - Jacks (to/from Controls card)

ER-VCF-02-DB J3.PNG

Schematics

ER-VCF-02 REV 1 Schematic

Issues

Rev 1

  • No issues, working

Videos

  • Design base on Low Pass only version of Moritz Klein's design

Assembly Sheet

  • Three card set
    • Front Panel
    • ER-PROTO-02 Controls card
      • RV1, RV2, RV5, RV6 (No RV3, RV4)
      • J3-J5
    • Analog card