Kilpatrick Audio K3020 Dual Oscillator

The K3200 Dual VCO is a state-of-the-art, low distortion dual analog voltage controlled oscillator. Matched transistors for best tracking and independent power supplies for each VCO guarantee high stability.

Each of the VCOs can be used as a VC-LFO as well, allows for mixing and blending between waveforms, features linear FM.

By offering waveform and mode adjustments through computer-controlled analog signal routing as well as internal VCA-based mixing circuits, noise-free switching and blending between waveforms is possible. The activities of the VCO core are displayed by white LEDs and the VCOs´ frequencies are shown as numbers on the backlit LCD.

• Each channel:
  • 1V/octave CV input - factory trimmed for 1V/octave response
  • Linear FM input with level control
  • Fine and coarse tuning controls
  • Normal VCO frequency range: 2Hz to 15kHz
  • LFO mode switch - period: greater than 70 seconds to 8ms (120Hz)
  • Temperature compensated exponential converter with super-matched transistors
  • Wave shaper with sine, triangle or ramp waveforms - switch selectable
  • Pulse shaper with three pulse types - switch selectable
  • Voltage controlled mixing between wave and pulse waveforms
  • High-end blend VCAs with ultra-low distortion and linear control
  • Sync input for hard syncing of VCO core
  • PWM input with level and offset controls - full deflection with 5Vpk-pk
  • Blend VCA control input with level and offset controls - full deflection with 5Vpk-pk
  • Blend output - output from the blend VCA containing wave and/or pulse waveforms
  • Pulse output - dedicated output from the pulse shaper containing pulse waveform
• Internal cross modulation controls:
  • Pitch modulation control - exponential frequency modulation of VCO2 from VCO1
  • PWM modulation control - modulate VCO2 pulse width from VCO1
  • Blend modulation control - blend between WAVE and PULSE waves on VCO2 from VCO1
  • Internal PLL mode for locking VCO2 to VCO1
  • Internal Sync mode for syncing VCO2 to VCO1
• Wave mix output - buffered mix of VCO1 and VCO2 wave outputs - for FM effects
• XOR output - digital Exclusive OR output from both VCOs - for ring mod-like effects