Roland Super JX-10

Roland JX 10 Image

Released in 1985 the JX-10 (Super JX) combines two individual JX-8P's for an outstandingly warm, rich and analog sound which is still used in many modern studios all over the world. This synth was the first Roland Synth to be fitted with a quality 76 note keyboard with velocity and aftertouch. Two DCO's per voice, two ADSR envelope generators per voice, and a resonant lowpass & non-resonant highpass filters are only the beginning. It has a 12 voice polyphony for a total of 24 oscillators and it is by far one of the most programmable synths of its time! However, as on the JX-8P, knobs and sliders have been replaced by low-profile buttons and a nice LCD display. Although this may look sleek and elegant, it makes editing a chore. Assign parameters to the alpha dial for tweaking, one at a time, or get the optional PG-800 Programmer to provide traditional, hands-on, dedicated sliders for editing the JX-10's parameters.

The JX10 has a Chorus effect and a chase-play Delay function. The chase-play function allows programmable delayed repeats of voices by alternating patches of the upper and lower modules. The simple chorus effect is either off, slow or fast. It has two programmable sliders (if you don't use the PG-800) for some real-time control which can be recorded along with other effects and keyboard modes into one of the 64 Program Patches. This is in addition to its standard 50 preset and 50 user patch memory. A simple sketch-pad 1-track real-time sequencer is also on-board. It stores sequence data directly to an M16C card, or an M64C card for Patch/Tone OR sequence data. The M16C has a capacity of 400 notes, the M64C 1440, according to the manual.

The JX-10 also comes in a rack-mount version known as the MKS-70. It's worth noting that the JX-10 can not be edited via SysEx, however the MKS-70 can which is one reason many have chosen the rack version over the keyboard. The JX-10 can make bulk dumps of its sounds over sysex, but only with (discontinued) Roland M64C RAM cartridges. The JX-10 has been used by Jane Child, Pink Floyd, Duran Duran, Angelo Badalamenti, Yellow Jackets and The Cure.

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97 Visitor comments
August 29, 2013 @ 5:42 pm
@nick waves: Yes, two DCOs per voice, with independent level controls (additionally, the amount of oscillator 2 can be varied by one of the envelopes.) (There's no triangle waveform, though - just saw, square, pulse, and noise.) However, that's no different than the JX-8P; the real power of the JX-10 comes into play when you use Dual-mode patches to play two different voices per keypress, giving you four DCOs (and two filters!) per voice. Great stuff.
Nick Waves
August 29, 2013 @ 9:31 am
So let me see if I get it. This synth can combine up to two waveforms right? It has two DCO, so that means I can combine a sawtooth and a square, or a square and a triangle, etc etc... is this correct?
August 29, 2013 @ 8:47 am
@ richard bates - try using gates on your analog inputs, and turn off the internal chorus (unless you really like it). I use mine with channel strips with EQ/Gate/Compressor in line, (EQ for hi-cut over 17k, fairly loose gates and mild compression) and have both a quiet and hot signal for tracking.
Richard Bates
August 14, 2013 @ 6:44 pm
I picked up a JX10 and PG800 off ebay, beautiful instrument and easy to program with the PG800. This is an extremely rich and silky sounding synth. It had some real background hiss and static issues though but with bringing up the volume all the way on the synth while having the mixer channel really low volume I completely have hidden the noise. It was definitely worth getting........will always be part of my studio.
August 11, 2013 @ 8:45 pm
@louis backer: Do you mean you're planning to get rid of an OB-8 to make room for another Super JX? I'd be interested in that once you find a second JX-10, if you're in the US...
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Rated 4.32 (630 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 12 voices
  • Oscillators - 2 DCO's per voice (24 oscillators)
  • Effects - Portamento, chorus, chase-play
  • Memory - 50 preset, 50 user patches, 64 Program Patches, External memory cartridges
  • VCF - One resonant low pass and one non-resonant hi pass filter (which can be used simultaneously)
  • VCA - 2 ADSR envelope generators per voice
  • Arpeg/Seq - 1-track real-time sequencer, 400 note memory (M-32 card), 800 note memory (M-64 card)
  • Keyboard - 76 key keyboard with velocity and aftertouch
  • Control - MIDI
  • Date Produced - 1986
  • Resources & Credits
  • Images from yousenditworks eBay Store.

    Thanks to Ecky Zudrop, JC CUTZ and Matthew Bassett for providing information.

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