Pittsburgh Modular Waveforms

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A wide range, high quality, complex VCO designed to be the core of a modern, analog synthesizer. The Waveforms module offers a full complement of standard waveforms including sine, triangle, saw, and pulse waves in addition to a sub octave generator and a unique modulatable blade wave. The oscillator offers 5 octaves of 1 volt per octave tracking, and a frequency range starting as low as 7 seconds per cycle, allowing it to double as an LFO. Additional features include oscillator reset for hard syncing, attenuated linear or exponential FM input, pulse width, and pulse width CV input.

  • Excellent Logarithmic Conformance
  • Temperature Compensated 1 Volt Per Octave Operation
  • Multiple Simultaneous Waveform Outputs
  • Sawtooth Wave Based Oscillator Circuit
  • Unique Modulatable Blade Waveform
  • Modulatable Square Wave Sub Oscillator
  • Linear and Exponential Frequency Modulation
  • PWM Input: 5% to 95%
  • Hard Sync Input
  • LFO Below Audio Frequency Operation
  • Size: 10hp
  • Depth: 36.5mm
  • Power Usage: +12v 70mA, -12v 65mA


  • Coarse and Fine Tune Frequency Controls - Full range sweeping coarse tune and limited range fine tune knobs.
  • Pulse Width Modulation CV In - Pulse width modulation CV input attenuator.
  • Pulse Width Modulation Control - Adjusts the width of the Pulse waveform.
  • Frequency Modulation (FM) CV In - Attenuated CV input can be switched between exponential and linear response.
  • Blade Wave Modulation CV In - Attenuated CV input controls the amount of blade waveform modulation.

Oscillator Patch Points:

  • 1V/O IN - One volt per octave CV input.
  • RESET IN - Oscillator reset Gate input.
  • BLADE IN - Blade wave manipulation input. PWM IN - Pulse width modulation CV input. SUB WAVE OUT - Sub Oscillator wave output.
  • SINE WAVE OUT - Sine wave output.
  • TRIANGLE WAVE OUT - Triangle wave output.
  • BLADE WAVE OUT - Blade wave output.
  • PULSE WAVE OUT - Pulse wave output.