JD-990

Roland JD-990

Released: 1993

MSRP: ?

Synopsis:

Could have been called a JV-990, since it uses JV multi-timbral architecture and memory (includes JV/JD waveforms and additional direct outputs). Tones can share filters and ring mod via structures (similar to JV-1080). Architecture Class: Rompler.

Ebay Description:

The Roland Super JD (JD-990) is a 2U rack (aftertouch and velocity sensitive), 6-24 voice (4|8-part multimbral), digital synthesizer, featuring 1-4 oscillators (195 samples with ring-mod and sync) per patch (192 patches, 64 editable), resonant low|high|band pass filter, dedicated (3-stage) pitch, (4-stage) filter, and (4-stage) amp envelopes, dual LFOs (noise, random, saw, sine, square, S/H, trapezoid, triangle waveforms, with offset and attack|decay), portamento, 3-band EQ, multi-effects, PCM and program card slots, quad stereo outputs, 3 rhythm sets (1 editable), and MIDI.

Physical

Form Factor	Dimensions	Weight	Audio Input	Audio Output	Communication Port	Control Input	Control Output	Switch Input	Power
2U rack	W:482mm(18.9375in) D:281mm(11.0625in) H:88mm(3.5in)	5.1kg(11.25lbs)	no	stereo:4	MIDI IN/OUT/THRU	MIDI	MIDI	sustain	23W AC

Interface

Compatibility	Multitimbral Memory	Program Memory	External Storage	External Programming	UI Input	UI Output
JD-800 JD-990 JV-80 JV-880 JV-90 JV-1000	preset-performance:32 user-performance:16 card:same	preset-patches:128 user-patches:64 preset-rhythm-set:2 user-rhythm-set:1 card:same	MIDI-SysEx User-Program-card:M-256E Preset-Program-card:PN-JD80\|PN-JV80 PCM-card:SO-JD80\|SO-PCM1	MIDI-SysEx	sliders and menu based	LCD display

Architecture

Multitimbral	Polyphony	Unison	Architecture
4\|8	24\|12\|6 (tones:1\|2\|4)	no	PCM->DCF->DCA

Output

Effects	Pan Modulator	Volume Modulator	Headphone
EQ:3-band multi-effects (reverb/chorus/delay+distortion/phaser/spectrum/enhancer)	key MIDI-CC10	aftertouch MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC11 MIDI-Bend LFO1/2 key MIDI-CC7 A-ENV velocity	yes

Control

Arpeggiator	Arpeggiator External	Sequencer	Sequencer Memory	Sequencer External	Continuous	Program Change
no	N/A	no	N/A	N/A	MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC5 MIDI-CC6 MIDI-CC7 MIDI-CC10 MIDI-CC80-83 MIDI-CC100 MIDI-CC101	MIDI

Keyboard

Key Pressure	Chord Memory	External Control	External Sustain	Key Scaling	Velocity Curves
channel	no	MIDI-SysEx	MIDI	variable	7

Sample

Stereo	Sample Depth	Sample Rate	Sample RAM	Sample ROM	Sample Points	Sample Trigger	Sample Loop	Sample Edit
no	16bit	?	no	?	N/A	N/A	N/A	no

Source

Name	Signal Class	Waveform	Octave Range	Amplitude Modulator	Harmonics Modulator	Pitch Modulator	Wave Assign Modulator
Sample	digital	sample:195 optional:SR-JV80	-	no	ring sync	aftertouch MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC11 MIDI-Bend LFO1/2 MIDI-PitchBend P-EG portamento	no

Filter

Name	Signal Class	IC	Resonant	Shape	Frequency Modulator	Resonance Modulator	Shape Modulator
TVF	digital	?	yes	low\|band\|high pass	aftertouch MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC11 MIDI-Bend key LFO1/2 F-EG velocity	no	no

Envelope

Name	Level	Rate	Loop	Polarity	Trigger	Level Modulator	Rate Modulator
P-EG	4	3	no	yes	no	velocity	key velocity
F-EG	4	4	no	yes	no	velocity	key velocity
A-EG	3	4	no	no	no	velocity	key velocity

LFO

Name	Waveform	Delay	Polarity	Sync	Delay Modulator	Level Modulator	Rate Modulator
LFO1	noise random saw sine square S/H trapezoid triangle (with offset)	attack\|decay	no	key external	key	aftertouch MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC11 MIDI-Bend	aftertouch MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC11 MIDI-Bend
LFO2	noise random saw sine square S/H trapezoid triangle (with offset)	attack\|decay	no	key	key	aftertouch MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC11 MIDI-Bend	aftertouch MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC11 MIDI-Bend

Rompler Models

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