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 However, as on the JX-8P, knobs and sliders have been replaced by low-profile buttons and a nice LCD display.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
Louis Backer
August 11, 2013 @ 5:22 pm
Just picked up one of these superb synths with a PG800 in pristine order. It really is quite a revellation to have only just "discovered" it after 25 years or more of owning analogue synths. I have two OB8's, a Synthex and a DSI Poly Evolver. It's closest to the Poly Evolver and I'm surprised to have to admit that in it's sheer august sound, it leaves my OB8's and Synthex standing. As a few have pointed out, this is a relatively undiscovered gem and still going for relatively low money. I'm certainly going to look out for another and get shot of an OB8.
August 5, 2013 @ 2:54 am
commodorejohn, fully agree with all of your senses.
August 3, 2013 @ 5:08 pm
Finally, *finally* got mine. My *God* what a beast this thing is. Huge analog brass, lush strings, some absolutely amazing piano sounds, some nearly-digital stuff (in the best sense,) just a giant spacious monster. Some of the presets are very nearly DX7-caliber stuff, but with an analog warmth that Yamaha FM just can't match. *Absolutely* pick one of these up if you get the chance - one day they're going to be far more sought-after than they are right now.
July 23, 2013 @ 2:41 pm
Does anybody know what could be causing a lack of after-touch response, on a JX-10? (but all the keys do work) It seems weird that all the keys are working, but the after-touch is not. Could it be caused by an internal setting? A "Fraser sysex mod" has been installed. Could that affect the after touch?
July 16, 2013 @ 4:26 pm
Great thanks guys, I will do that this weekend!

I recommend opening the synth up and cleaning each key with Windex + Q-Tips really makes the difference. Mine as well just freakin' Q-Tip the whole thing (minus circuit boards) so that it doesn't feel like junk when you play it!

Anyone used DeOxit on the buttons yet like SoundDoctorin recommends?
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User Rating

Rated 4.32 (632 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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