Wersi Bass
Synthesizer AP-6 (1978)

A vintage monophonic synthesizer from Wersi, famous German organ producer.

The original name contains a German character"ß" also sold in a special kit version.

KEYBOARD (weight: ?) 37 keys with tolex suitcase.

Main panel features 10 knobs, 22 push buttons and 2 sliders for performance play.


Back panel terminal connectors:
- master tune knob
- main jack output at variable impedances
- custom 12 pins connector for Wersi damp pedal.

 

VOICE monophonic subtractive synthesis features 1 oscillator.
The main sound is the "Guitar Bass" features volume control and damp pedal option.

WAVEFORM the main guitar bass can be mixed with 3 others basic waveforms.
Here's the waveforms details:

	SAW	SQUARE	SINEWAVE
Octaves	8' + 16 '	8'	16'+ 8' + 4' + 2' + 1'
Variable width	-	-	-
Volume mix	yes	yes	yes

ENVELOPE 3 EGs:
- EG1 2 segments AD for sinewave register
- EG2 Bass guitar same as EG1 sinewave decay segment
- EG3 filter (same EG1 structure).

FILTER non-resonant VCF just -6 dB /Oct. slope.
Manual VCF cutoff or routing (AUTO) to a single sinewave LFO modulator ROTOR with variable speed.

LFO 2 modulators LFO:
1- LFO VCF modulation called "ROTOR"
2- LFO VCA vibrato with adjustable depth and 2 fixed frequencies NORMAL or SLOW.

PERFORMANCE the 2 sliders for performance play:
1- wahwah filter modulation amount
2- hawaii tab gliding note amount

AUDIO DEMO

some wersi bass sounds

Just a basic demo, we sold this machine a long time ago. If you wanto to send yours, just upload them :)

VIDEO CLIP SELECTION Synthesizer demo2 demo3