Pulp Logic
Primitive Ring Modulator - 6HP

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Item: N13-4080

Primitive Ring Modulator - 6HP


The Pulp Logic ‘Primitive’ is an old fashioned analog ring modulator / waveshaper module. It uses transformers and germanium diodes (in the shape of a ring) to multiply the two input signals. This method of mixing results in an output that is comprised of the sum and difference of the two input frequencies. This module is a Eurorack implementation of the innovative work performed by Harald Bode over half a century ago. 


  • Inspired by Harold Bode designs from over half a century ago
  • 2 Input Signals with Input Level Control Each
  • Offset Amount Control
  • Ring Shaped Germanium Diodes
  • Output comprised of sum and difference of the two Input Frequencies
  • Input Impedance > 100kΩ
  • Output Impedance – 560Ω

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  • Eurorack Module
  • 6 HP Width
  • 32mm Depth
  • Current Draw: 15mA @ ±12V

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