Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 exptools; site ihlpm.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!ihlpm!michael1 From: michael1@ihlpm.UUCP (pula) Newsgroups: net.music.synth Subject: Re: Velocity sensitive upgrade for JX3-P Message-ID: <485@ihlpm.UUCP> Date: Tue, 17-Sep-85 15:17:08 EDT Article-I.D.: ihlpm.485 Posted: Tue Sep 17 15:17:08 1985 Date-Received: Wed, 18-Sep-85 04:18:29 EDT References: <442@decwrl.UUCP> Organization: AT&T Bell Laboratories Lines: 33 > 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