Elektor Formant Vintage Modular Synthesizer

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via this auction

Pics of the inside below.

"Elektor Formant is Moog- like style analog modular synthesizer designed by C. Chapman with 1V/oct. VCO charakteristics. Modules are connected internally together thus synthesizer is playable without using patch cords. Nevertheless, the interconnection has no effect to possibilities of a modular system. Plenty patch cords are attached to the instrument.

This Formant was precisely made in the Switzerland approximately in 1985-88. An appearance and working condition are very good, the synthesizer was serviced, adjusted, new interconnection between modules was made, electrolytic capacitors on the PSU are replaced.

Other accessories: Original documentation with schematics, patch cords, CV and GATE 6.3” conectors on the rear panel. Standard 230V power input. Weight 20kg, 54x61.5x27 (cm)

Modules overview:

4x VCO

waveforms: sawtooth, trianle, sinus, pulse, spaced sawtooth, all waves can be mixed freely together
1V/oct. characteristics, switch for internal/external CV
FM input with gain control
PWM input with gain control
PW control
coarse, fine tune controls
output gain + conector
1x 24dB VCF

cutoff input with gain control
ext. Signal conector with gain control
output signal conector with gain cotrol
cutoff, resonance, ADSR controls
LP/HP switch
6,12,18,24 dB switch
Serial / parallel switch
VCO1/VCO2 switch
1V/oct. characteristics, switch for internal/external CV
1x 12dB VCF

cutoff input with gain control
ext. Signal conector with gain control
output signal conector with gain cotrol
cutoff, resonance, ADSR controls
LP, HP, BP switches, combinations are possible
Serial / parallel switch
VCO3/VCO4 switch
1V/oct. characteristics, switch for internal/external CV

2x Dual VCA

AM input and gain control
Ext. Signal and gain control
Gain control
ADSR on/off switch
4x ADSR

attack, decay, sustain, release controls
envelope conector
AD/ADSR mode switch
1x triple LFO

3x freq controls
3x output conectors tringle, sawtooth, pulse
1x Noise modul

low/fast random voltage control
outputs: white nose, coloured noise, random voltage
1x COM modul (Common Output Module)

equalizer bass, midle, treble
output gain control
2x 6.3mm jack audio outputs
LED +15V/+5V/-15V"