Multivox MX-65 Analog Polyphony Synthesizer

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The Multivox MX-65 Polyphonic synthesizer is manufactured from 1977 to 1980 and was also marketed as the MX-65 Pulser.

The MX-65 has six voices: piano, strings, clavichord, honky-tonk, piano electric and organ. The voices themselves are different combinations of the filter and envelope positions for switch between. The filter is controlled with an envelope of 3 modes. There are a fast attack / fast decay mode, an ‘expand’ mode with resonance emphasis, and a fast attack / slow decay mode.

The front panel gives some control over the MX-65's presets. There are envelope shape controls, an LFO (delay, depth, speed), and 3 Ensemble/Chorus modes. Connections include Gate Out and VCF control in. The Gate Out has positive and negative polarity outputs. The VCF control in is a control voltage input or pedal control. As a cv input it is 1.3 v/octave. (source: synth db)