A 6-voice
polyphonic analog synthesizer with a 61-note
keyboard. Manufactured between
1981 and
1984, being the last analog synth from Yamaha.
Like the
CS-30, The CS-70M not only offers 2
oscillators per voice, but also separate
filters and
amplifiers.
The
VCO are switchable between
sawtooth,
square and
pulse waveforms. A
white noise generator is also included.
The
filter section contains 2
resonant 12
dB/
octave* multimode
VCFs per voice, with controls for cut-off and resonance. They are switchable between high-, low- & band-pass modes, and feature their own
independent envelope generator.
ADSR EGs are included on the
VCAs, with max 10s
decay and
release times.
There are 2
LFOs, one of which is programmable. Available waveforms are sine, sawtooth and square.
The
aftertouch-sensitive
keyboard can be switched between
normal,
split and
unison modes.
Normal is the default 6-voice polyphonic mode,
split uses the later
sustain to cut notes and
unison stacks all 6 voices together for a
thick monophonic sound.
Other features include an internal
memory holding up to 30 user
patches, a
magnetic data card interface for extra storage,
hold plus
glide and
glissando. CV/gate is available for external control.
*
6dB/octave in band-pass mode
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