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Roland JD-990

 

 

 

Roland Jd990

audio demo Country: Japan
Weight: 5,2 Kg
Dimensions: na
audio demo trend price : 600€
manual roland jd990 service manual demo video comments

 

ROLAND Super JD-990
Synthesizer Module (1993)

 

Roland JD-800 Rackmount version of the keyboard synthesizer with great enhancements but sacrifying the real-time controls galore.

Check out comparison Roland JD800 VS JD990 chart.

 

jd990

jd990

info RACKMOUNT 2 units. The main panel features a 320 x 80 pixels display, 34 button and a rotary data wheel.

Front panel terminal connectors:
- headphone signal out
- 2 slots for data and PCM cards

Back panel terminal connectors:
- main stereo out
- 6 aux outputs
- Midi interface



 

edit TECH main core H8/570 manages 24 oscillators polyphony; the DAC is a Burr- Brown PCM61P. A single patch is composed by 4 PCM layers by the JD WG wave generator that can be interconnected into algorithms modes (check out table below). Each layer features some parameters:

structure list - level mix
- pitch coarse + fine (or even random amount)
- pitch key follow mode from -100 to +200% range
- FXM frequency cross modulation (8 levels + depth)
- oscillator period sync mode
- wave delay start time (5 modes)
- velocity range trigger threshold low and high
- key zone low and high.

 


wave ALGORITHMS the tones can be combined in 6 signal paths (list) or structures.
These are pre-fixed audio patches that connect the 2 pairs of tones into variable setups mixed with 3 audio elements: amplifier, filter and ringmodulation (4 models).

structure list TECH: same algorithms can be found on Roland samplers like S770, S750 or DJ70





wave WAVETABLE internal 6MB ROM contains 195 PCM waveforms sampled at 44 kHz and organized in 5 categories. NOTE: the JD-990 added new waveforms to ensure compatibility with Roland JV-80. FULL PCM LIST HERE

jd800 transients - basic waveforms inspired by analog synthesizers e.g "fatsquare" "synsaw" or "fatsaw"
- mathematical transients and overtones inspired from Roland D-50 L.A. synthesis
- one shot percussion acoustic samples
- samples from acoustic instruments
- loops and noises






wave
EXPANSION the JD-990 can be expanded using 3 kinds of cards:
- 8 X SO-JD are JD800 Roland set (data + PCM)
- 21 X SR-JV with different purposes and instrument styles
- Roland PN JV80 series 8 x SO-PCM1.

One of the most sought-after model is the VINTAGE expansion Srjv-04 a must-have adds 256 sounds made exclusively for the 990 + 256 others designed for JV series.

SR-JV80-01 POP  
SR-JV80-02 ORCHESTRAL  
SR-JV80-03 PIANO  
SR-JV80-04 VINTAGE SYNTH  
SR-JV80-05 WORLD  
SR-JV80-06 DANCE  
SR-JV80-07 SUPER SOUND SET  
SR-JV80-08 KEYBOARDS OF THE 60's & 70's  
SR-JV80-09 SESSION  
SR-JV80-10 BASS AND DRUM  
SR-JV80-11 TECHNO COLLECTION  
SR-JV80-12 HIP HOP  
SR-JV80-13 VOCAL COLLECTION  
SR-JV80-14 ASIAN  
SR-JV80-15 SPECIAL FX Collection  
SR-JV80-16 ORCHESTRAL II  
SR-JV80-17 COUNTRY Collection  
SR-JV80-18 LATIN Collection  
SR-JV80-19 HOUSE Collection  
SR-JV80-98 EXPERIENCE 1 promotional board
SR-JV80-99 EXPERIENCE 2 promotional board
SL-JD80-01 Drums STANDARD
SL-JD80-02 Drums & Percussion DANCE
SL-JD80-03 Rock Drums
SL-JD80-04 Strings Ensemble
SL-JD80-05 Brass Section
SL-JD80-06 Grand Piano
SL-JD80-07 Guitar Collection
SL-JD80-08 Accordion


JD9D SERIES
, esclusively made for JD990
JD9D-3 Modern Master
JD9D-2 Modern Sonics
JD9D-3 Modern Masters



performance PERFORMANCE
the system handles 7 patches (+1 drum) with these mix settings:

- Midi channel assign
- coarse + fine tune
- analog out assignment
- effect amount
- panning position
- level mix
- voice priority
- monophonic / solo with legato mode and portamento
- aftertouch can be assigned to TVF / TVA / WG pitch
- breath can be assigned to volume / amplitude / modulation aftertouch.
performance


 

filter FILTER a multimode (lowpass / highpass / bandpass) digital resonant filter is assigned for each PCM layer.

filter TIP: Using algorithms 2/3/4 it is possible to chain filters eg: 2 lowpass mode filters at 2 poles can be put in series to obtain a doubling effect at 4 poles.




adsr ENVELOPE
3 EGs for each PCM layer. All EGs offers a keyfollow mode and 7 curves, in addtion the panning position can be set either specific stereo values, to random or assigned to the keyfollow mode.

envelope - EG pitch: 3 segments level + 3 times
- EG filter (TVF) : 4 segments + 4 times
- EG amplitude (TVA) 4 segments + 4 times



lfo LFO up to 2 delayed modulators with variable depth and note retrig mode with fade IN time.
The modulators are interchangeable and they do provide 8 shapes with variable offset : triangle, saw, square, sample & hold, random standard, random chaos, trapezoidal and sinewave.
There are 4 LFO destinations:

lfo - freely assignable to matrix destination
- LFO to amplitude
- LFO tofilter cutoff
- LFO to WG pitch




lfo MATRIX each PCM layer offers 8 virtual patching cords for modulation control.
The general setup defines 2 sources and matrix control sets the destinations with variable depth amount (positive and negative values). Check the sum-up table:

SOURCES A: SOURCES B : DESTINATIONS:
modulation CC#1
aftertouch
expression
breath
pitch bender
foot control
modulation CC#1
aftertouch
expression
breath
pitch bender
foot control
pitch
cutoff
resonance
LFO1-2 pitch modulation depth
LFO1-2 filter modulation depth
LFO1-2 amplitude modulation depth
LFO1 rate
LFO2 rate




filter EFFECT
FX DSP is split into 2 groups: A (mono) + B (stereophonic).
Effects from A-B can be chained in different combination order and relative parameters controlled by Midi controllers e.g modulation, aftertouch, expression, breath, pitchbender and foot control.
EQ shelving model 3 bands: low - med - high

Group A: Group B:
- 7 distortions models with drive amount
- phaser with depth / rate
- dynamic enhancer
- a 6 bands spectrum enhancer


- stereo delay up to 600 Ms can be synched to Midi clock
- chorus with rate, depth and feedback
- 5 reverbs including Room, Hall, Gate, Reverse and Flying mode.






midi MIDI
basic CC# including:modulation, panning stereo volume gain and hold
TIP: JD-990 can be edited by a JD-800 but unit IDs must be matched in system options, also JD-990 is compatible with JD-800 but not the contrary.





memory MEMORY
:
- 64 RAM +128 ROM patches
- 16 RAM + 32 ROM performances
- 1 RAM + 1 ROM rhythm setup
RAM doubled if Roland m-256 E (or D) is present

Jd990 motherboard <-- LEFT Battery replacemen: a simple CR2032 3V in a holder, easy to change!

 



memory OS
is stored on a single 256 kb EPROM 27c240. OS check hold the Inc + Dec buttons and switch on. Latest is V 1.05

os eprom

<-- hex dump

Download lastest BIN


 

memroy EDITOR there are some computer softwares:

- Soundquest (PC/MAC, $$$)

- Sounddiver (out of business)

- JD990 layout (IOS IPAD, free) INFO

- CNTRL (open source, free) INFO
jd990 editor

 

 

memroy RELATED FAMILY: JD-800 is more or less the previous keyboard version with a lot of realtime control but . Here's the differences: (roland jd800 vs jd990)

- JD990 lacks hold pedal and expression pedals.
- Jd990 lacks real-time controls
- JD800 features 4mb Vs 6mb Jd990
- JD800 is a limited performance structure
- JD800 features less analog outs
- JD800 lacks panning position
- JD800 lacks matrix modulation
- JD800 lacks polyphonic portamento
- JD800 lacks Sr-Jv slot expansion
- JD800 misses 3 LFO shapes
- JD800 lacks waveform sync
- JD800 lacks frequency cross modulation FXM
- JD800 lacks ringmodulator
- JD800 lacks algorithmic structures
- JD800 cannot read more than 1mb PCM
- JD800 delay is limited to 600ms (vs 3000)
- JD800 delay cannot be synched to Midi

Roland JD800 VS JD990 Comparison chart

roland jd990


 

effet VST PLUGIN / SAMPLED VERSION NO JD-990VST has ever been released, however there are some free and commercial samples set:

legowelt

legowelt

effet

free sample pack (JD800)


 

 

demoAUDIO DEMO

demo Factory demo 1
demo Factory demo 2
demo Factory demo 3
demo Factory demo 4
demo sea pad
demo space pad

demo sweeping the JD
demo sweeping again
demo ethereal chords
demo vector-like
demo texture
demo watcher of the skies mellotrons (SRJV-4)

 

 

video VIDEO SELECTION

Roland JD-990 JD-990 demo "Soul Waves" Electronica Demo Of Internal Sound Set
demo1 "Soul Waves" Internal Sound Set

 

 



Company: Roland
Model: JD-990
Class: Synth module
Rackmount: 2 units
Dates: 1993
Display: 320 x 80 dots
Synthesis: digital PCM
Polyphony: 24 voices
Multitimbric: 8 part
Oscillator: 4 PCM
Wavetable: 195 PCM
S.rate: 44 kHz
Algorithms: 6 modes
Crossmod: yes
Filter: HPF / LPF / BPF
LFO: 3 modulators
Memory: 64 slots
Effect: 8 modes
Sequencer: none
Arpeggiator: none
Midi: IN / OUT / THRU
CPU: H8/570
DAC: PCM61P
OS: latest V1.5
Demo: 52

 

manual
MANUAL

 

jd990 reset

FACTORY and PATCHES RESET

To reset factory sound hold exit and press utility; press F6 then F5

 





manual
MANUAL AND SCHEMATICS

 

roland jdd90 brochure
lfo original brochure

brochure 1
lfo original brochure

 

brochure 1
lfo original brochure

 

brochure 1
lfo original brochure

 

brochure 1
lfo original brochure

 

brochure 1
lfo original brochure

 

jd800 scan
lfo original brochure

roland jd800 and jd990
lfo original brochure

 

roland jd990 tour
lfo original brochure

 

roland jd990 review
lfo original brochure

 

ROLAND JD-990
FOR SALE


ROLAND JD-990

CHECK OUT EBAY OFFERS

 

 

 

jd990 made in japan jd990 OS eprom jd990 motherboard
still made in Japan Jd OS version JD 990 motherboard

awardSPECIAL AWARDS:

solid solid
Sounds amazing digital classic

comment

REVIEW "Roland at digital top: lush sound pads and sweeps, best money can buy specially with vintage XP!""

manual manual
- great sweep, pad -limited polyphony
sounds
- memory
   

990

 

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Roland JD-990 Roland JD-990
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