Synth Museum

"Synthesizer preservation via research and education."

The Web SynthArk


Roland JX-8P

JX-8P (copyright 2012)

Released: 1985

MSRP: $1695US


The JX-8P adds portamento, a second EG and additional modulation routings to the JX-3P voice architecture. Architecture Class: Conventional (subtractive).

Ebay Description:

The Roland JX-8P is a 61 key, 6 voice polyphonic (aftertouch and velocity sensitive) analog synthesizer, featuring dual oscillators (saw/square/pulse/noise waveforms with PWM, sync, and FM), high-pass and resonant low-pass filters, dedicated filter and amp ADSR envelopes, LFO (sine/square/random), portamento, chorus, 64 presets (32 editable), cartridge interface, and MIDI.


Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
61 keys W:977mm(38.4375in) D:375mm(17.75in) H:92mm(3.5625in) 11.5kg(25.375lbs) no stereo MIDI IN/OUT/THRU programmer MIDI MIDI sustain 25W AC (IEC C9 to NEMA 1-15P)


Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
- N/A preset:32 user:32 cartridge:32 M-16C cartridge PG-800 menu florescent display


Multitimbral Polyphony Unison Architecture
no 6 2 (mono:2) DCO1+DCO2->HPF->VCF->VCA


Effects Pan Modulator Volume Modulator Headphone
chorus no aftertouch ENV-2 velocity MIDI-CC7 yes


Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no N/A no N/A N/A pitch-bend mod-lever MIDI-CC1 MIDI-CC5 MIDI-CC7 MIDI


Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
yes yes MIDI pedal MIDI 1 no


Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
DCO-1 digital pulse square saw 2-16' no PWM FM ENV-1|ENV-2 LFO pitch-bend MIDI-PitchBend portamento velocity no
DCO-2 digital noise pulse square saw 2-16' ENV-1|ENV-2 PWM sync ENV-1|ENV-2 LFO pitch-bend MIDI-PitchBend portamento velocity no


Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
HPF analog opamp no high pass no no no
VCF analog IR3R05 yes low pass aftertouch LFO key ENV-1|ENV-2 velocity no no


Name Level Rate Loop Polarity Trigger Level Modulator Rate Modulator
ENV-1 sustain attack decay release no DCO VCF no no no
ENV-2 sustain attack decay release no DCO VCF no no key


Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO sine square random yes no no no aftertouch mod-lever MIDI-CC1 no
Conventional Models
RS-101 RS-202 RS-505 RS-09 SA-09 VP-330 SH-3 SH-5
SH-1000 SH-2000 SH-7 SH-1 SH-2 SH-09 SH-101 MC-202
CMU-810 TB-303 CMU-800 Juno-6 Juno-60 MKS-10 Juno-106 Juno-106s
HS-60 MKS-7 Juno-1 HS-10 Juno-2 HS-80 MKS-50 Jupiter-4
MRS-2 Jupiter-8 Jupiter-6 MKS-80 JX-3P MKS-30 GR-700 JX-8P
JX-10 MKS-70