bottom@katadn.DEC (09/16/85)
I was down to one of the local stores and the guy running the store said that they had a velocity sensitive upgrade for the JX3. What this does is it makes the JX3 sound velocity sensitive when driven via MIDI by a velocity sensitive keyboard. This upgrade costs $120. It consists of adding an EPROM to the synth. A bit expensive eh? I told the guy I could solder myself, he refuses to sell me just the part. Is this part available through Roland? He wouldn't tell me where he gets them. Dave Bottom DEC Augusta Maine !dec-rhea!dec-katadn!bottom
michael1@ihlpm.UUCP (pula) (09/17/85)
> I was down to one of the local stores and the guy running the store said > that they had a velocity sensitive upgrade for the JX3. What this does > is it makes the JX3 sound velocity sensitive when driven via MIDI by a > velocity sensitive keyboard. This upgrade costs $120. It consists of > adding an EPROM to the synth. A bit expensive eh? I told the guy I could > solder myself, he refuses to sell me just the part. Is this part > available through Roland? He wouldn't tell me where he gets them. > > Dave Bottom Yes Roland does sell the upgrade directly. I bought and installed it myself about 4 months ago. If you bought your JX-3P new, you should probably be getting copies of RUG (Roland Users Group) magazine. The upgrade is listed in the back for @ $50.00. Be careful! The JX-3P is not fun to take apart and I do mean take apart! The PROM which you need to replace is located in an akward position. The instructions which accompany the new PROM are translated from Japanese and require a little thought to figure out what is meant. After that the installation is straight forward. A single jumper is required from the new PROM to an existing ROM. The mod does work. As Dave said, this chip will not make your JX-3P keyboard velocity sensitive, only the MIDI input. It should also be noted (and I didn't know this when I bought the mod), that in velocity mode, the JX-3P keyboard is disabled and can only be re-enabled by power-cycling the JX-3P! So if you've got a JX-3P lying around (probably because you can't sell it for any fraction of what you paid (-:) this mod is probably for you. Also, I don't have the Roland info, so I'll try to dig that up in the near future. -- !ihnp4!ihlpm!michael1