A
monophonic analog synthesizer with a 37-note
keyboard. Released around
1973-
1975*, being Yamaha's first keyboard synth not counting the
GX-1 prototype.
The SY-1 offers a single
VCO,
resonant high- and low-pass
VCFs, one
VCA plus an
LFO. Other features include a
slide effect and limited
pressure sensitivity (wired to the VCF) on the keyboard.
28
preset instruments are included, with no real programmability available. The user does have some
limited control over the presets though: the low-pass
filter's cut-off and resonance are adjustable, as well as the LFO's
rate and
delay. The VCA offers sliders for the simple AR envelope generator.
*
All of my sources claim a different year. Anyone with solid information, /msg me!
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