A
polyphonic analog synthesizer with 3
keyboards. Released in
1973, with at least 7
units (but not many more) produced. The asking price in '73 was $60000.
The GX-1 features two 61-note (5-
octave, C-C)
velocity sensitive keyboards, plus a
pressure sensitive 37-note (3-oct) one. Also featured are a
pedal-board plus a
ribbon controller for
modulation.
The synth offers 8-voice polyphony with one
monophonic voice. Each poly voice consists of 2
VCOs, a 2-pole low-pass
VCF, one
LFO and two Envelope Generators. The sounds can be
coupled and
layered with the mono voice as the top note.
Programming the sounds is done via a set of "hidden"
miniature controls.
Yamaha later used the GX-1
circuitry in the
CS-80.
Famous users include
Hans Zimmer (who bought his from
Keith Emerson) and
Stevie Wonder (who called it "a
dream machine").
back to Yamaha