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3   Using the MIDI Upgrade

There are two ways to play with the MIDI Upgrade: from the keyboard and over MIDI.

3.1  Keyboard Playing

Playing the synth from the keyboard is almost as before, but with a few small changes.  The 
processor stores up to eight keys pressed, and plays the highest note.  If you release the highest 

note it then plays the next highest note, and so on until the last key is released.  This makes it 
easy to keep a low bass note held, then play higher notes, and in between the high notes the 

synth will play the bass note.

3.2  MIDI Playing

Playing the synth over MIDI is very easy.  The MIDI Upgrade receives messages on MIDI 

Channel 1.  This cannot be changed.
Connect your synth to a MIDI device (keyboard, computer, sequencer, etc).  Then play. 
Pitchbend is set to move up and down two semitones.  The Modulation wheel opens up the 

filter cutoff, so with a high resonance you can manually sweep the filter as you are playing. 
This really comes into its own when you use a sequencer, such as Apple's Logic, where you 

can literally draw Modulation curves on screen.
The front panel glide control also works when playing from MIDI.

~

And that's all there is.  No complicated menus.  No tedious setting up.  No loading OS disks 

before you can make a sound.  Turn on, tune up, play it.

 

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Summary of Contents for SX1000

Page 1: ...JEN SX1000 MIDI Upgrade Installation User Manual Neil Johnson www njohnson co uk...

Page 2: ...hts reserved First edition February 2008 Minor corrections April 2008 For the latest version of this manual please refer to the website http www njohnson co uk Jen SX1000 Support questions may be sent...

Page 3: ...e 6 2 2 Step by Step Installation 6 2 2 1 Opening The Jen SX1000 6 2 2 2 Removing The Keyboard 7 2 2 3 Fitting The MIDI Upgrade Board 7 2 2 4 Fitting the MIDI Socket 9 2 2 5 Connecting the Filter Cuto...

Page 4: ...ES Unfortunately this chip is no longer made and the design of the SX1000 lends itself to stressing the output drivers of the M110 amongst other things As a result together with age the M110 often die...

Page 5: ...he instructions are presented as tick lists Follow each item in the list and tick them off as you go That way you can go away and return to the installation and know exactly where you were 2 1 Prepara...

Page 6: ...y soft surface for example a table covered in a large towel 2 2 Step by Step Installation Once you are all set up and ready to go proceed with the following steps Throughout these instructions it is a...

Page 7: ...t the metal panel on the rear face Use a towel or pillow to protect it 2 2 2 Removing The Keyboard Remove the two or four screws holding the keyboard in place Move the keyboard mechanism towards the f...

Page 8: ...esolder the IC socket used for the M110 Fit the new IC socket Solder each pin making sure there are no solder bridges or dry joints Remove the six 5k6 resistors blue green red gold that sit next to ea...

Page 9: ...a single 15mm diameter hole in the rear panel plus two 3mm diameter holes each side to match the socket supplied Fit the MIDI socket into the rear panel using the two black screws provided 2 2 5 Conne...

Page 10: ...shape closest to a square wave Turn off and disconnect from the mains power socket 2 2 7 Replacing The Keyboard Turn the keyboard over and slide it back into the wooden base Refit the screws inside t...

Page 11: ...d set up a voice Operate the MIDI controller and check the synth responds to the MIDI messages Once you are satisfied with the operation of your modified synth you may wish to sell your M110 chip to a...

Page 12: ...3 2 MIDI Playing Playing the synth over MIDI is very easy The MIDI Upgrade receives messages on MIDI Channel 1 This cannot be changed Connect your synth to a MIDI device keyboard computer sequencer et...

Page 13: ...lt 4 OMNI OFF MONO Mode Messages x Altered x Note Number True Voice 1 127 Velocity Note On x Note Off x After Key x Touch Channel x Pitch Bender o 2 semi 14 bit Control Change 1 o Mod Wheel Prog x Cha...

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