neen, standaard ontvangt die JX geen Midi CC data of sysex...enkel note on en pitchbend en misschien nog iets maar in elk geval niks om de sounds mee te editten :-(
maar er blijkt een midikit te zijn van een nederlander :
http://organix.inque.org/proj_jx3pexp.html
The Roland JX-3P synthesizer is a nice analog synth produced in 1983. Today people still use this synth very often. The JX-3P was one of the first synthesizers with MIDI. The sounds can be edited from the frontpanel and with a PG-200 programmer. One of the biggest disadvantages is that the MIDI functionality is very limited. No SysEx or CC support was implemented. It is impossible to edit the sounds via MIDI. The second disadvantage is that the PG-200 programmer and the MIDI-IN can not be used simultaneously.
To solve these shortcomings, a JX-3P MIDI Expansion kit is designed. This kit adds a lot more MIDI functionality to the Roland JX-3P synthesizer.
This upgrade kit offers:
simultaneously use of the MIDI Input and PG-200
control the JX-3P realtime with standard MIDI CC messages. (i.e. with a MIDI-Knob controller). No need anymore for a real PG200 to tweak your JX-3P with knobs
all knobs and switches on the PG-200 send out standard MIDI CC messages.
create, load and store new JX-3P patches with your computer, and share them with other people.
select the MIDI channel on the JX-3P as 1, 2, 3 or OMNI
velocity sensitivity (MIDI input only, not the keyboard)