Model:         Syntovox SPX 216
Bands:         14
Retail price  1500 Euro
Produced:   19?
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:  See spareparts page
CEM3360
LM324
TL074
TDA 1034/NE5534
CD 4052

The external connector for this is a DIN 41612 connector. Fi harting 09 03 232 6824.

The yellow pushbuttons provide electronic switching.

Syntovox SPX216 specsSyntovox SPX216 diagram.

Syntovox SPX216 switch logic schematics , Syntovox SPX216 led ol schematic,

216 brochure france,

SPX216 Open

 

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
  • 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.