Dutch Synths

Syntovox 216
Model:         Syntovox SPX 216
Bands:         14
Retail price  1500 Euro
Produced:   ???
Size:             1 HE
Features:     Stereo out , all CV’s available on rear connector, VCO,  selection carrier source, formant shift.We included many new features like stereo output and a variable high pass filter for speech input.
Suited for live as well as studio use.This is our last model which was produced.Used parts: 
TDA 1034/NE5534
CD 4052

The external connector is a DIN 41612 connector. Fi harting 09 03 232 6824.The yellow pushbuttons provide electronic switching.

Manual SPX216
switch logic schematics ,
 Syntovox SPX216 led ol schematic,
Syntovox SPX216 psu
Syntovox SPX216 io

Left button, carrier select:
Carrier input (LEDs off)
Speech distortion
Internal VCO, sawtooth wave
Internal VCO, PWM wave
Middle button, formant shift:Up formant (analizer 123… -> synthesizer 234…)
Normal formant (analizer 123… -> synthesizer 123…)
Down formant (analizer 234… -> synthesizer 123…)
External patching through rear connector, no internal connections (LED’s off)
Right button, output:Bypass
Vocoder + bypass
The VCO is not 1V/octave, but it makes it easier to get started or to do a demo.Stereo was achieved by mixing odd synthesis channels to left and even to right.

Backpanel connecter:

The connector for this is a  DIN 41612 connector; type C; female; 32 pins
This backpanel connector can be used for other routing.