Manchester Ultra VCF


A modern take on a timeless classic...

Based on the diode ladder circuitry of the illustrious EMS VCS3, the Manchester Ultra low pass voltage controlled filter can bring a truly visceral sound to any modular system. Equiped with duel input channels, the internal feedback design is capable of sine wave self oscillation when the resonance is pushed to its maximum limit. This filter can bring the acid squelch made famous in Madchester and then some, as it can easily be overdriven across its entire range.

Features and Specifications:

  • 3U eurorack compatible
  • 100% analog circuitry
  • Duel channel input with attenuation
  • Cutoff frequency CV modulation input
  • Initial cutoff frequency and resonance controls
  • Control of modulation input depth
  • Capable of self oscillation (not tuned for 1v/oct. response)
  • Frequency range: 10Hz - 20kHz+
  • Output Voltage: 6-12Vpp, depending on input and cutoff factors
  • Front panel: 3mm thick, laser cut clear acrylic
  • Width: 14 HP (approx. 70.80 mm)
  • Module depth:
  • Power: +/- 12 Volts DC at 40-60 mA (shrouded 16 pin header)

Sound samples and compositions:

This demo features the Manchester Ultra voltage controlled filter processing raw square(0:00-2:12) and triangle (3:20-4:00) wave audio from the Monogon VCO, as well as the filter's own self oscilation capablities. The pitch cv is being supplied by an Arturia Beatstep, with modulation sources coming from a Mongon in LFO range and a Flux Ultra ADSR enevelope generator. This demo is intended to represent the pure and unadulterated filtering capablitity of the Manchester Ultra, so no additional signal processing has occurred.

  • 0:40 - 1:30 Cutoff frequency modulation via LFO
  • 1:31 - 2:11 Cutoff frequency modulation via envelope generator
  • 2:12 - 2:56 Filter self-oscillation
  • 3:20 - 4:00 Triangle wave input