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"Here is a great sounding EMS AKS with many very musical additions : nothing beats the REAL thing !! :)
All modifications were originally installed by Piano Center - Paris in the 70s.
It came back from a thorough service by Belgium EMS specialist tech in February 2022. All aging parts replaced by new ones, sync mod has been shielded and full calibration applied.
List of modifications is as follows:
OSCILLATORS:
- osc1 switch: top position: sync osc2, centre position: no sync (original), bottom position: sync osc3
- osc2 switch: top position: sync osc1, centre position: no sync (original), bottom position: sync osc3
- osc3 top switch : top position: sync osc1, centre position: no sync (original), bottom position: sync osc2
- osc3 bottom switch: right position: hi frequency (a shape drift is normal when enabled), left position: lo frequency (original)
ENVELOPE SHAPER:
- ATTACK pot switch: left position: short attack time (original), right position: long attack time
- switch between ON and DECAY pots :
left position: time depends on the KS gate signal length (original)
centre position: KS gate mute
right position: time depends on the ON pot setting only, the KS gate is converted into a short trigger
MATRIX:
- matrix switch:
left position: output channel 1 signal on row 1 (original)
right position: KS sequencer CV transposed by the KS keyboard CV, input level ch1 pot scales the transpose interval
- wired pins : inverter pins
- attack button jack : gate input
- KS minijack : in parallel with sequence length turn wheel, likely intended to modulate the sequence length with expression pedal (not confirmed)
The synth's general cosmetic condition is great overall, the only significant flaw being a crack in the case as seen in the pictures.
Comes with its power cable, umbilical KS-to-Synthi cable, a few patch sheets and full set of pins."
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