80-4

Voltage Controlled Mixer

Courtesy/Thanks to: Digisound

Description: Voltage Controlled Mixer based on CEM 3340.
Four channel mixer with manual and external voltage control of signal mixing and panning. Frequency response from 0Hz to 18kHz. Manual control of overall gain with overload indication. Gain variable from -16 to +14dB. This unit offers many novel approaches to sound synthesis.

The original 80-4 model was replaced by the 80-4A incorporating minor improvements to the circuitry. The linear control compensation for the drive of the CEM 3330 was improved, together with a few component upgrades to reduce CV feed through and increase gain factor.

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Files

80-4.jpeg
	Picture of the frontpanel of the 80-4
80-4.jpeg
	Picture of the frontpanel of the 80-4
80-4_5_eti.pdf
	Article from ETI March 1980 for the 80-4 and 80-5
80-4.fpd
	Frontpanel Designer file for the 80-4 Original 9 x 3 inch
80-4_motm.fpd
	Frontpanel Designer file of the 80-4 MOTM-format 5U x 2U
80-4_pcb.gif
	PCB foil for the 80-4
80-4a.pdf
	Digisound document for 80-4A

Manufacturers

Digisound Ltd
	Manufacturer of the Digisound 80 Modular system. Charles Blakey ran a small family-owned company cal

Modular mother system

Digisound 80
	Modular Synthesizer

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