Chadacre Electronics Ltd

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

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

Voltage controlled audio modules
Also known as the Chadacre 6300 system. These were available pre-assembled or as a kit of components, PCB and data sheet.
 * 6300 auto phasing unit.
 * 6301 integrated circuit ring modulator.
 * 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.
 * 6305 white noise generator. Two noise generators, two independent variable bandpass filters and two phasing amplifiers.
 * 6306 envelope shaper. Variable attack, on, decay and off times. Self-triggered, (encapsulated module).
 * 6307 white noise generator.
 * 6315 white sound generator
 * 6317 auto filter/waa-waa unit (manual or voltage controlled)
 * 6318 manual filter/waa-waa
 * 6319 VCA, (encapsulated module).
 * 6345 sub-octave generator