This 1U rack unit is rather more interesting than a traditional noise source or even a “sample & hold” circuit. The schematics are available for the EMS Synthi 100, and it is possible to work out what the circuit does. An interior screen shot of the PCB is available (see below) which is a VCS3 […]
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The 1040 Noisillator module from the ARP 2500 synthesizer (also referred to as a VCO/Noise/Random Voltage module) was in the original ARP Tonus announcement of 1970. It can be seen in the initial brochures and in the price list at $595. However it was never put into production and we have only a black and […]
Continue ReadingThis is a replica of the ARP 1016 Dual Noise Source module from the ARP 2500 Analog Modular Synthesizer. The module consists of a two noise sources with pink. white and random outputs. The original design uses the traditional “transistor in avalanche mode” to generate white noise. This signal is then amplified and filtered (using […]
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