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Roland Mks50

 

 

 

Roland Mks50

info Country: Japan
Weight: 3,5Kg
Dimensions: 480 (w) x 290 (h) x 44 (d) mm
audio demo trend price : 350€
manual service demo video comments

Roland Mks-50
Synthesizer Module (1987)

 

The MKS50 is the Alpha Juno module version with some minor enhancements but keeping same sound.

module

roland corp

info RACKMOUNT 1 rack unit.
The main panel features a LCD display, 1 knob and 17 buttons.

Rear panel terminal connectors:
- main signal out
- Midi interface
- tape interface.

Front panel terminal connectors:
- headphones.

 

 


edit TECH main 8 bits CPU M80C31 manages 6 voices polyphony.
Each voice has an assigned DCO oscillator based on custom Roland IC RD87123.

STRUCTURE each DCO is composed by 2 summable waveforms + 1 sub oscillator + 1 noise generator:


roland mks50 tech

wave Harmonic variations: Level width: range:
pulse 3 - yes (3rd shape) 4' 8' 16' 32'
saw 5 - yes (3rd shape) 4' 8' 16' 32'
suboscillator 5 yes - 1 / 2 oct below
white noise 0 yes - -

 



filter FILTER
multimode VCF based on 6 X IR3R05 IC (also VCA):
- lowpass at -24dB/Oct : with resonance that does not reach auto-oscillation
- highpass: 4 scaled values.
The VCF also provides a 15-levels keytracking system.


IC filter
- CLICK TO MAGNIFY -




adsr LFO
a single delayed modulator and 2 destinations with individual depth values:
- LFO to DCO pitch
- LFO to DCO VCF filter.

LFo






adsr ENVELOPE
a single 4-stages + 3 time levels with polarity inversion EG assignable to:
- DCO pitch
- VCF filter cutoff
- VCA amplitude with special gate mode
In addition the VCA provides a 15-levels keytracking system.


DCO EG

 



adsr
PERFORMANCE some special functions:
- octave transpose keyboard
- portamento
- chord mode learn (it outputs Midi)
- bender range 1 octave setting
- key transpose
- 15 aftertouch levels (by Midi IN) assignable to VCF / DCO / VCA.
MIDI some basic CC# are managed including: modulation, foot control, portamento time
and hold



roland mks50 tech

 

fxEFFECT section features an analog stereo chorus based on MN3101 + MN3009 IC like Juno-60 or Jx-3p with adjustable rate


chorus

BBD

 



memory MEMORY
:
- 128 RAM slots.
- 64 RAM chords.
Sounds must be saved to magnetic tape or Midi exclusives data dump
BATTERY REPLACEMENT : change lithium battery model CR-2032 soldered to the mainboard.


roland mks50 tech
click for zoom





edit EDIT
main panel lacks many real-time commands, but there are many computer software or it is possible to use the dedicated optional programmer model PG-300.
- VST AU Alpha JUNO Editor (MAC-PC / $$) PIC
- Midiquest (MAC-PC / $$) PIC
- MKS-50 (Atari ST / freeware now) PIC
- CTRLR (MAC-PC-LINUX / free) PIC
- Alpha BASE (PC / free) PIC
- Alpha Juno Control (MAC / free) PIC below.


alpha juno editor



 

family RELATED MODELS :

alpha juno1 Alpha Juno 2 HS-80
Alpha juno1 first of the series 49 keys Alpha Juno 2 5 octave JU1 keyboard velocity and aftertouch HS-80 consumer version of alpha Juno2
     
HS-10 PG-300  
HS-10 - an alpha juno1 with different case. PG-300 this programmer allows to fully edit the MKS module.  




effet VST PLUGIN / SAMPLED VERSION there are some free and commercial samples set:

  name price demo
EFM Oddse -PHUTURA
-SMC Joono VST
FREE
phutura vst
odsay REDOMINATOR commercial VST plugin redominator



 

demoAUDIO DEMO

demo Performance 1 + drum samples
demo Performance 2 + drum samples
demo Performance 3 + drum samples
demo Performance 4 + drum samples
demo Performance 5 + drum samples
demo Performance 6 + drum samples
demo FX: scary ohhhhohhhh LOL
demo Organ: b3 analog
demo Harpsichord: like a 8 bits
demo Piano: analog poor
demo Clavinet: naaaa
demo Bass: funky
demo Bass: mooga
demo Bass: razor
demo Bass: jumpy
demo Bass: soft quiet
demo Bass: attack
demo Drums: analog kit
demo Drums: timpani
demo Ambient: system
demo Ambient: chill
demo Ambient: space
demo Pad: murky
demo Pad: chorus
demo Pad: time bandit
demo String: LFO movement
demo String: very simple
demo Synth: WOOObled
demo Synth: what's a hoover?
demo Synth: Drill
demo Synth: droning
demo Synth: melodie d'amour
demo Synth: rate by rate
demo Synth: resonance up
demo Synth: square world
demo Synth: slippery when dry
demo XP: waveforms all pulses
demo XP: suboscillators waves
demo XP: sawtooth width
demo XP: pulse width
demo XP: white noise and filter
demo XP: lowpass and resonance
demo XP: highpass mode filter
demo XP: LFO all shapes
demo XP: Chorus BBD
demo RETRO: SANXION with TR-606



video VIDEO SELECTION

video1 video2 video3
demo1 demo2 demo3

 

 

roland aplha juno pic



 

 

 

 

 

roland mks50
demo big picture

 

 

 


manual
MANUAL

 


manual
Service MANUAL/ schematics

 

 

 

 

scan2
demo original brochure

 

 

 

scan2
demo original ad

 

 

scan2
demo original brochure

 

 

scan2
demo original brochure

 

 

scan2
demo original brochure

 

 

 

Roland Mks50 FOR SALE
Roland Mks50 FOR SALE
CHECK OUT EBAY OFFERS

 

 

CPU EPROM OS filter
awardSPECIAL AWARDS:
solid
NERVOUS EDIT

solid
BANG for the BUCKS!


comment

REVIEW : "the most sought-after Alpha, salve spacer filled with classic sounds. You need external controllers for a decent sound edit."

manual manual
- juno series - poor edit interface
- still affordable
- limited structure



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Roland Mks50 3.5 out of 5 based on 1 ratings. price €350