Korg MS-20 Kit


Bygg din egen full size MS-20 modul!

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A full-size MS-20 that you can assemble yourself
MS-20 Kit
The MS-20 Kit is a kit that lets you obtain a real MS-20 by assembling the parts according to the directions in the owner’s manual. Most of the steps are simply a matter of tightening screws or fitting parts together, so you don’t need to know about soldering or electronic circuitry. Beyond any doubt, the analog sound generated by the MS-20 that you yourself completed will sound more valuable than that of any other synthesizer.
Unlike the MS-20 mini, the MS-20 Kit is a full-size unit with a standard-sized keyboard, and the plugs are also full sized 1/4″ phone plugs.

Two types of filter are provided: both the early and later versions
MS-20 Kit
The original MS-20 used different VCF circuits depending on the date of production. Units produced in the earlier period used a filter noted for its distinctive distortion and self-oscillation, while the filter used in later units was a low-noise design with a more mellow character.
Amazingly, this new MS-20 Kit provides both filters. You can switch between the two by moving a jumper pin on the circuit board according to your taste or needs.

Overseen by the engineers of the original MS-20;
a complete replication of the original analog circuitry
Just like the MS-20 mini, development of the MS-20 Kit was led by the original engineers themselves, who spared no effort to perfectly replicate the circuitry of the original unit. When it was necessary to substitute a part, the engineers made the decision based on their own ears, ensuring that the exact sound of the original unit has been reproduced. In fact, the sound of the MS-20 kit has a somewhat bright and extreme quality to it because its sound is that of an original MS-20 in mint condition at the time it went on sale, before any of the components aged.

2VCO / 2VCF / 2VCA / 2EG / 1LFO structure
The MS-20 kit reproduces the distinctive synthesis of the MS-20; two oscillators with ring modulation, and envelope generators with hold and delay.

External signal processor (ESP) for processing an external signal
The ESP carries on the experimental spirit of MS-20; it allows you to use the pitch or volume of an external audio source to control the synthesizer. For example, you can input an electric guitar and use the MS-20 kit as a guitar synthesizer, or input a mic and use it as a vocal synthesizer.

Extremely flexible patching system
The patching system provided to the right of the panel lets you create complex sounds by plugging-in cables to change the connections between the various units. The possibilities are limited only by the user’s imagination; different combinations of the modulation input/output and trigger, sample and hold, and noise generator can produce an incredible variety of sounds. By patching according to the MS-20 flow chart that’s printed on the panel, even the beginner can start taking advantage of these possibilities right away.

MIDI IN connector and USB connector
The MS-20 kit provides a MIDI IN jack for receiving note messages, and a USB-MIDI connector that can transmit and receive note messages. You can even connect the MS20 kit to your computer and play it from a sequencer.

Powered by an AC adapter
Although the power is supplied by an AC adapter, the voltage specifications used internally are the same design as the original unit.

Replicates every detail of the original, down to the package binding and the included manual
MS-20 Kit Setting Chart
Our efforts to remain faithful to the original are not limited to the unit itself. Even the package that contains the unit replicates the original as far as possible. Also included are the original MS-20 owner’s manual and settings chart, explaining how to create sounds. Now you can experience the excitement of the MS20, just like it was during its original release in 1978.

Package contents of the MS-20 Kit
Front panel, Rear panel, Bottom panel, L-shaped bracket(x 2), Left side pane, Right side panel, Left side shield,

Right side shield, Panel support, Knob (large) (x 7), Knob (small) (x 29), Rubber bushing (x 10), Rubber feet (x 4),

Cord hook, Nut 12 mm – shiny (x 36), Washer (x 36), Screw (x 36), Nut 11 mm – matte (x 30), Nut 11 mm – shiny (x 6),

Keyboard unit, Wheel unit, Rear jack circuit board unit, Left panel circuit board, Right panel circuit board & VR circuit board

(small), VR circuit board (large), Power supply circuit board, Box-end wrench (included)
Main Specifications
KeyboardC – C: 37-key (3 octaves)Main Controller:Control wheel (center click)
Momentary switch –>GNDInput/OutputSignal input (Monoral Phone Jack), Signal output (Monoral Phone Jack, 2V p-p output impedance 3.5k Ω), Head phones output (Stereo Phone Jack, 33 Ω 48mW), DC12V, MIDI IN, USB(Type B)Power Consumption:9WPower Supply:DC12VDimensions:
(W x D x H)573 × 316 × 248 mm / 22.56 x 12.44 x 9.76 inchesWeight:6.3 kg / 13.89 lbs.Accessories:AC adaptor (12V/1.5A), Patch Cord x 10
Specifications in details
Control Section1. Keyboard: C ~ C 37Keys(3 octaves)2. Voltage Controlled Oscillator 1 (VCO 1): Scale (32′, 16′, 8′, 4′) (6 octaves, +cent, -cent)
: Wave form(Triangle, Sawtooth, PW-Square, White Noise) (4 modes)
: Pulse width adjust 1:1 ~ 1:infinity3. Voltage Controlled Oscillator 2 (VCO 2): Scale (16′, 8′, 4′, 2′) (6 octaves, +cent, -cent)
: Wave form(Sawtooth, Square, Pulse, Ring modulator) (4 modes)
: Pitch( ± 1 octave)4. VCO Master control : Master tune( ± 100cent): Portamento(max. 10sec)
: Frequency modulation intensity by MG/T.EXT(-5V ~ +5V)
: Frequency modulation intensity by EG1/EXT(-5V ~ 0V)5. VCO Mixer: VCO 1 Level
: VCO 2 Level6. Voltage Controlled High Pass Filter (VCF HPF): Cutoff frequency(50Hz ~ 15,000Hz)
: Peak(flat ~ self OSC)
: Cutoff frequency modulation intensity by MG/T.EXT(-5V ~ +5V)
: Cutoff frequency modulation intensity by EG2/EXT(-5V ~ +5V)7. Voltage Controlled Low Pass Filter (VCF LPF): Cutoff frequency(50Hz ~ 15,000Hz)
: Peak(flat ~ self OSC)
: Cutoff frequency modulation intensity by MG/T.EXT(-5V ~ +5V)
: Cutoff frequency modulation intensity by EG2/EXT(-5V ~ +5V)8. Envelope Generator 1: Delay time(10sec)
: Attack time(10sec)
: Release time(10sec)9. Envelope Generator 2: Hold time(20sec)
: Attack time(10sec)
: Decay time(10sec)
: Sustain level(0V ~ 5V)
: Release time(10sec)10. Modulation Generator (LFO): Wave form(Negative Sawtooth ~ Triangle ~ Positive Sawtooth, Wide Pulse ~ Square ~ Narrow Pulse)
: Frequency(0.1Hz ~ 20Hz)11. Manual controller: Cntrol wheel(center click)
: Momentary switch –>GND12. Power switch and Volume: Volume13. Indicator: LED(KBD trigger, Modulation Generator rate, Power ON)External Signal Processor1. Control section: Input signal level
: Low cut frequency(50Hz ~ 2,500Hz)
: High cut frequency(100Hz ~ 5,000Hz)
: CV adjust
: Threshold level2. Input and Output: Signal In
: Amplifier Out
: Band pass filter Out
: CV Out(0 ~ +8.4V)
: ENV Out(0 ~ +5V)
: Trig Out(+5V–>GND)3. Indicator(LED): Peak indicator
: Trigger indicatorPatch Panel1. Keyboard: Keyboard control voltage output(Exponential) (0 – +8V)
: Keyboard trigger output(+5V–>GND)
: VCO-1 + VCO-2 control voltage input(Linear response)(0 – +8V)
: VCO-2 control voltage input(Linear response) (0 – +8V)2. VCO: VCO-1 + VCO-2 external frequency control input(OCT/V)(-5V – +5V)3. VCF: External signal input(3Vp-p max.)
: External High pass filter cutoff frequency control input(2OCT/V)(-5V – +5V)
: External Low pass filter cutoff frequency control input(2OCT/V)(-5V – +5V)4. VCO + VCF: Total external modulation input(T.EXT)(-5V – +5V)5. VCA: External initial gain control input(0 – +5V)6. EG: EG 1 envelope signal normal output(0V – +5V)
: EG 1 envelope signal reverse output(+5V – 0V)
: EG 1 + EG 2 trigger input(–>GND)
: EG 1 trigger input(–>GND)
: EG 2 envelope signal reverse output(+5V – 0V)7. MG: Triangle output(Negative Sawtooth – Triangle – Positive Sawtooth)(5Vp-p)
: Rectangle output(Wide Pulse – Square – Narrow Pulse)(0 – +5V)8. Noise Generator: Pink noise output(5Vp-p)
: White noise output(5Vp-p)9. Sample and Hold: Clock trigger input(–>GND)
: Sample signal input(5Vp-p max.)
: S/H output(5Vp-p max.)10. Modulation VCA: Control voltage input(0 – +5V)
: Signal input(-5V – +5V)
: Signal output(-5V – +5V)11. Manual controller: Control wheel output(-5V<--0V-->+5V)
: Momentary switch output(–>GND)12. Signal out: Signal output(2Vp-p output impedance 3.5k Ω )13. Head phones: Head phones output(33 Ω 48mW)14. USB: Type B, USB-MIDI Input/Output
*Only note messages (velocity is not used) can be transmitted and received.15. MIDI: MIDI Input
*Only note messages (velocity is not used) can be transmitted and received.