Chadacre Electronics Ltd

Chadacre Electronics Ltd a British company incorporated on 1st January 1970 and based at Chadacre Avenue, Clayhall, Ilford, Essex,[1] was a mixer manufacturer which in the early to mid 1970s also produced a series of synthesiser modules.[2][3] There was a showroom on Stratford Broadway.[4]

Chadacre 4310 microphone amplifier module.

Chadacre modules were single sided fibre glass boards terminated by a twenty two pin gold plated edge connector.[5]

Voltage controlled audio modules

Also known as the Chadacre 6300 system.[6] These were available pre-assembled or as a kit of components, PCB and data sheet.[4]

  • 6300 auto phasing unit.[4]
  • 6301 integrated circuit ring modulator.[2][4]
  • 6303 also 6303/1 and 6303/2 (encapsulated module), oscillator. Square and saw outputs. 100 kO input impedance permits use of a capacitor sustain memory. 200 mV per octave control sensitivity.[2][4]
  • 6305 white noise generator. Two noise generators, two independent variable bandpass filters and two phasing amplifiers.[2]
  • 6306 envelope shaper. Variable attack, on, decay and off times. Self-triggered, (encapsulated module).[2][4]
  • 6307 white noise generator.[2]
  • 6315 white sound generator[4]
  • 6317 auto filter/waa-waa unit (manual or voltage controlled)[4]
  • 6318 manual filter/waa-waa[4]
  • 6319 VCA, (encapsulated module).[4]
  • 6345 sub-octave generator[4]


  1. ^ Companies House
  2. ^ a b c d e f Survey:Electronic music synthesizers, Studio Sound, May 1972, p. 33
  3. ^ The A-Z of analogue synthesisers part one: A-M by Peter Forrest, Susurreal Publishing, 1998, ISBN 0952437724, pp. 56-57
  4. ^ a b c d e f g h i j k Chadacre advert, Studio Sound, Oct 1972, p. 4
  5. ^ Chadacre advert, Studio Sound, Apr 1972, p.34
  6. ^ Mods Rule... OK? by Sam Hearnton, Electronic Soundmaker & Computer Music, Feb 1985, p. 45

External links