A dual voltage controlled state variable filter from Curtis ElectroMusic Specialities.

from the original data sheet

  • low cost
  • two independent state variable filters in a single 16-pin DIP
  • separate frequency and Q control inputs for each
  • wide frequency sweep and Q control range
  • exponential control scales for both frequency and Q
  • two simultaneous outputs on each: low-pass & band-pass or band-pass & high-pass possible
  • two simultaneous inputs for each: fixed gain and variable gain
  • chip configurable into many unique VCF:s
  • wide supply range: ±3V to ±16V

    Synthesizers using the chip:
    with the amount used

    Crumar Spirit  2
    Rhodes Chroma  8
    Synton Synrix  2
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