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Korg EX-800 (1984)

Korg EX-800

Trend price : 150-200€

Module of the famous polysynth Poly-800 with some minor technical enhancements.

Overview
(weight: 2.5 Kg) can be rackmounted with optional ears. Main panel features basic alphanumeric display, 15 buttons and 3 knobs
Back panel terminal connectors:
- Midi interface (with Thru)
- tape inferface
- headphones
- main out
- pedalswitch input for program UP
- switch selector between synth and tape mode



Voice
8 digitally controlled oscillators assignable in 2 different manners:
- double mode: 2 x 4 voices for a thicker richer sound
- whole mode: 1 x 8 voices for full polyphony

Oscillator
an oscillator features 2 summable waveforms saw and square plus 4 additive harmonic octaves heights at 16' 8' 4' 2' and a white noice generator.

Filter
a limited paraphonic filter based on a single NJM2069. The chip is a resonant (but not self-resonant) analog 4 poles lowpass with cutoff, contour and possible polarity reverse.

LFO
2 triangle-shapped modulators:
- MG1 modulates FILTER VCF
- MG2 modulates DCO pitch

Envelope
- 1 DCO1 amplitude: 6-stages ADBSSR
- 1 DCO2 amplitude: 6-stages ADBSSR
- 1 VCF: 6-stages ADBSSR

Effect
simple analog chorus board

Sequencer
a very basic 256 steps sequencer with external Midi clock sync

Memory
- 64 RAM patches
handles Sysex and features a Cr-2032 battery


Audio demo:


Video Clip:

video clip


Review
OK: cheap / classic
NOT : a bith thin / 1 filter / edit
"classic budget analog, space-saver: don't expect too much sonic power but painful edit"

cool


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Text , review, special demos copyright polynominal.com / Eric Pochesci

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