This document came with my Oberheim Xpander, as an addendum to the 
user manual, when it was bought new in 1984. Apparently, users had 
trouble patching in the most usual controllers. The original is not 
very fancy, it's xeroxed copies of a document typed on a typewriter. 
I just transferred it to the digital realm.  -- Johan Boberg
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                                                            11/08/84


                 XPANDER MIDI CONTROLLER NOTES


        MIDI controllers must be enabled on the Xpander.

1. Select Master Page.
2. Select MIDI.
3. Select Enables.
4. Select (underline) Control.
5. Press page 2 and return to MIDI page.
6. Select CTRLS and check MIDI controller assignments for 
correct conreoller routing.
7. Switch to NO DEFAULTS on MIDI ENABLES page if settings are to 
remain the same on power up.


                           Pitch Bend
                           
1. Select VCO 1.
2. Select page 2.
3. Select (underline) Lev 1.
4. Repeat for VCO 2.


              Individualized Vibrato Stored by Patch / Mod Lever

1. Select VCO 1.
2. Select FREQ to modulate.
3. Select LFO X (modulation source).
3. Choose which LFO to use (1 to 5). Enter number in X SELECT.
4. Increase mod amount to hear vibrato.
5. Select LFO page and enter number of the LFO mod source.
6. Reduce LFO AMP amount to 0 .
7. Select AMP to modulate.
8. Select LEVER 2 as mod source and adjust amount to full.
9. Adjust LFO mod amount on VCO 1 FREQ for desired depth.
10. Repeat procedure for VCO 2 if desired.


        SINGLE PATCH GLOBAL VIB        
      (programable enables per patch)

      Single patch VIB is a special preassigned multi-patch vib
that can add vibrato to all enabled single patches without having 
to program frequency modulation (vibrato) into each patch
separately. For each single patch, VIB is enabled by selecting 
(underlining) VIB while in page 2 of both VCO 1 and VCO 2 pages.
"VIB enable" can be stored in each single patch . After routing 
depth amount desired MIDI controller (LEV 2), VIB can be used as a 
live-performance mod wheel (lever) conreoller on all enabled single 
pathces.

1. Select VCO 1.
2. Select page 2.
3. Select (underline) VIB.
4. Repeat procedure for VCO 2.
5. Select Master page.
6. Select VIB.
7. Increase AMP amount to audible vibrato depth.
8. Adjust LFO SPEED, and WAVE SHAPE to preference.
9. Reduce AMP amount to 0.
10. Select VIB page 2.
11. Select MIDI controller (LEV 2).
12 Adjust VIB depth amount on Xpander while mod wheel (lever)
controller on full.

Note: "VIB enable" should be stored into each patch program that 
user may use VIB on.


      PROGRAMMING SUSTAIN PEDAL
(Non-MIDI)

      This procedure is for programming sustain pedal control into
a patch when using an Oberheim footswitch directly into an  Xpander
external Ped input controller.

1. Plug pedal into "PEDAL 2" for global control.
2. Observe which envelope is modulating VCA 2.(press mod dot).
Enter ENV X and number of VCA envelope.
3. Whithout pressing down on the pedal, increase "RELEASE" amount of 
the envelope to desired amount of sustain, as if the pedal was 
depressed.
4. Press "RELEASE" button to modulate and select "PED 2" as source.
5. Reduce the modulation of "PED 2" to a negative amount. Continue
reducing, until the sustain level of the sound returns to the 
desired amount when the foot pedal is not depressed.


      MIDI SUSTAIN CONTROLLER
      
      MIDI controls must be enabled on the Xpander first, in order 
for any MIDI controller information to be recieved. The MIDI
Controller number being used (Yamaha sust ped = 64) should be 
assigned to the appropriate Modulation Source (PED 2) on the 
MIDI CTRLS page.
      When using a MIDI controller to operate sustain, the pedal 
modulation amount (affecting env RELEASE) may operate best with a 
positive amount.


                            Velocity

1. Single patch; select Filter/VCA.
2. Reduce VCA 1 amount to 7.
3. Select VCA 1 to modulate.
4. Select VELOCITY as modulation source.
5. Increase Velocity mod amount to full for reference.
6. Check keyboard response and adjust VEL mod amount.
7. Repeat procedure for filter envelope if desired.