Yamaha SK20
(image courtesy of Yamaha )
Released: 1980
MSRP: Y231,000
Synopsis:
Adds presets and more programmability to SK-15
Architecture Class: Conventional (subtractive).
Ebay Description:
The Yamaha SK20 is a 61 key, 7 voice analog ensemble synthesizer, featuring organ, string, and poly-synth sections, dedicated organ and string/synth brilliance, tremolo, vibrato, string and mix volume pedal inputs, and dedicated Polysynth, Organ, and tone cabinet outputs. The synth section also features a slow attack button, release, and a resonant low pass filter with dedicated ADSR envelope. The organ section features 7 stops and an (AR) envelope.
Physical
Form Factor
Dimensions
Weight
Audio Input
Audio Output
Communication Port
Control Input
Control Output
Switch Input
Power
61 keys
W:1000mm(39.375in)
H:158mm(6.25in)
D:406mm(16in)
15kg(33lbs)
no
mix
Polysynth
Organ
tone-cabinet(11pin)
no
no
no
sustain
AC (30W)
Interface
Compatibility
Multitimbral Memory
Program Memory
External Storage
External Programming
UI Input
UI Output
-
N/A
organ:2
polysynth:3
string:2
(preset)
no
no
dedicated sliders/knobs
LED
Architecture
Multitimbral
Polyphony
Unison
Architecture
3 (Organ and polysynth can be split)
7
split:7+7
no
VCO->VCF->VCA+
VCO->VCF->VCA
Output
Effects
Pan Modulator
Volume Modulator
Headphone
"Ensemble" chorus
no
EG
Tremolo
pedal
yes
Control
Arpeggiator
Arpeggiator External
Sequencer
Sequencer Memory
Sequencer External
Continuous
Program Change
no
N/A
no
N/A
N/A
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
Organ
analog
square?
click:2
1' 2' 2.6' 4' 5.3' 8' 16'
(mix)
no
no
Vibrato
no
Polysynth
analog
variable
saw/square
synth:8-16'
string(mix):8'16'
no
no
Vibrato
no
Filter
Name
Signal Class
IC
Resonant
Shape
Frequency Modulator
Resonance Modulator
Shape Modulator
Organ-Brilliance
analog
?
no
band pass (+-7dB at 5kHz)
no
no
no
Polysynth-Brilliance
analog
?
no
band pass (+-12dB at 5kHz)
no
no
no
VCF
analog
?
yes
12dB low pass
saw8':6dB band pass
VCF-EG
no
no
Envelope
Name
Level
Rate
Loop
Polarity
Trigger
Level Modulator
Rate Modulator
OrganEG
-
DR
no
no
key
no
no
PolysynthEG
-
switch:A
R
no
no
key
no
no
VCF-EG
sustain
attack
decay
release
no
no
key
no
no
LFO
Name
Waveform
Delay
Polarity
Sync
Delay Modulator
Level Modulator
Rate Modulator
Vibrato
triangle?
yes
no
no
no
no
no
Tremolo
triangle?
no
no
no
no
no
no
