Yamaha CS-20M
(image courtesy of Yamaha)
Released: 1979
MSRP: Y220,500 ($1595US)
Synopsis:
Expands CS10 functionality with dual oscillators and a RAM based memory
Architecture Class: Conventional (subtractive).
Ebay Description:
The Yamaha CS-20M is a 37 key, monophonic analog synthesizer, featuring dual oscillators (pulse, sine, saw and triangle waveforms), noise, resonant low|high|band pass filter, dedicated (ADSR) filter and amp envelopes, LFO (saw:down|up, sine, square, S/H waveforms), CV/gate IO, tape interface, and 8 editable presets.
Physical
| Form Factor |
Dimensions |
Weight |
Audio Input |
Audio Output |
Communication Port |
Control Input |
Control Output |
Switch Input |
Power |
| 37 keys |
W:849mm(33.375in)
H:177mm(7in)
D:455.5mm(17.875in)
|
16kg(35.3lbs) |
no |
mono:low/high/balanced |
no |
CV gate |
CV gate |
sustain
portamento |
AC (28W) |
Interface
| Compatibility |
Multitimbral Memory |
Program Memory |
External Storage |
External Programming |
UI Input |
UI Output |
|
- |
N/A |
user:8
(battery backup via 2x AA) |
tape |
no |
dedicated sliders/knobs |
LED |
Architecture
| Multitimbral |
Polyphony |
Unison |
Architecture |
| no |
1 |
no |
VCO1+VCO2+noise->VCF+sine->VCA |
Output
| Effects |
Pan Modulator |
Volume Modulator |
Headphone |
| no |
no |
LFO
VCA-EG
pedal |
yes |
Control
| Arpeggiator |
Arpeggiator External |
Sequencer |
Sequencer Memory |
Sequencer External |
Continuous |
Program Change |
| no |
N/A |
no |
N/A |
N/A |
pitch-wheel
mod-wheel
portamento-slider
brilliance-knob
release-slider
volume-pedal |
no |
Keyboard
| Key Pressure |
Chord Memory |
External Control |
External Sustain |
Key Scaling |
Velocity Curves |
| no |
no |
no |
pedal |
no |
no |
Source
| Name |
Signal Class |
Waveform |
Octave Range |
Amplitude Modulator |
Harmonics Modulator |
Pitch Modulator |
Wave Assign Modulator |
| VCO1 |
analog |
pulse
saw
sine
triangle |
2-64' |
no |
PWM |
auto-bend
CV
LFO
portamento
pitch-wheel |
no |
| VCO2 |
analog |
pulse
saw
triangle |
2-64' |
no |
PWM |
auto-bend
CV
LFO
portamento
pitch-wheel |
no |
| Noise |
analog |
noise |
no |
no |
no |
no |
no |
Filter
| Name |
Signal Class |
IC |
Resonant |
Shape |
Frequency Modulator |
Resonance Modulator |
Shape Modulator |
| VCF |
analog |
IG00156 |
yes |
low|high|band pass |
key
LFO
VCF-EG |
no |
no |
Envelope
| Name |
Level |
Rate |
Loop |
Polarity |
Trigger |
Level Modulator |
Rate Modulator |
| VCF-EG |
sustain |
attack
decay
release |
no |
VCF |
gate
key
LFO |
no |
no |
| VCA-EG |
sustain |
attack
decay
release |
no |
no |
gate
key
LFO |
no |
no |
LFO
| Name |
Waveform |
Delay |
Polarity |
Sync |
Delay Modulator |
Level Modulator |
Rate Modulator |
| LFO |
saw:down|up
sine
square
S/H |
no |
no |
no |
no |
mod-wheel |
no |
