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Siel EX-80 (1985)

Siel EX-80

Trend price : 150€

Module released as an expansion of the Italian synthesizer DK-80, technically slimmed-down but keeping same synthesis structure.


Company: Siel
Model: EX-80
Class: module
Dates: 1985
Display: 7 segments
Technology: analog
Synthesis: subtractive
Oscillators: 8 DCO
Polyphony: 4/8 voices
Multitimbric: no
Filter: LPF paraphonic
LFO: 2 modulators
Envelope: 2 Egs
Sequencer: 2 tracks

SYNC: Midi clock / trigger
Effect: analog chorus
Midi: IN / OUT / TRHU
Memory: 10 slots
Storage: ram cartridge
DCO IC: SGS M112B1
Filter IC: SSM 2045
FX IC: BBD 1022P
PSU: 16V AC AC
Demo: 1
Video: 1
Review: 1

DOWNLOAD: user manual -


Overview
main panel features a segment display, 24 buttons and 2 knobs.
Back panel terminal connectors:
- stereo output
- sequencer clock input
- headphones
- Midi interface
- pedalswitch input


Voice
8 voices polyphony, oscillator model DCO based on a I SGS M112B1 (also VCA).
Voice structure offers 2 modes:
- single: 1 DCO and 8 notes polyphony + 1 pink noise
- dual: 2 DCO and 4 notes polyphony with detune + 1 pink noise

Oscillator
DCO features 2 possible shapes:
- square with 3 summable harmonics octaves 16' 8' 4'
- sawtooth

Filter
paraphonic resonant filter based on a single SSM-2045 at 4-poles slopes.

LFO
2 delayed modulators range from 0,25 Hz to 10 Hz:
- LFO1 DCO pitch
- LFO2 VCF cutoff

Envelope
there are 2 EGs:
- EG voice A.D.B.S.S.R
- EG filter A.D.B.S.S.R

Sequencer
manages up to 2 tracks with no special functions but metronome.

Sync
Clock can be synched to:
- analog trigger input
- Midi clock

Effect
just one analog chorus based on BBD TDA1022P with no possible edit.

Midi
all parameters can be controller by Midi control change.

Memory
- ROM 40 sounds
- RAM 10 sounds
- RAM 300 notes


Audio demo:


Video :

video clip


Review
OK: price / Midi
NOT : DCO-DCA / too limited
"ok a box with a LOT of limitation, but can achieve some simple but decent polyphonic sounds "

cool


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

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