The JV-2080 allows you to control the speed of the rotary speaker effect algorithm remotely via MIDI continuous controller messages. Assigning rotary speed to an expression pedal is a useful feature that saves your hands from having to trigger the effect with a bender or by applying aftertouch. For the following example, we are going to control rotary speed from a pedal connected to an external device:

1. Set the external device so that pressing the pedal transmits Foot Controller messages (CC#4).
2. Press PATCH.
3. Press PRESET.
4. Press the TONE SWITCH 1 button (under USER).
5. Use the VALUE dial to select "PR-A:54 Rocker Spin."
6. Press F6[EFFECTS] to display the Effects parameter page.
7. Press F3[EFX Ctl] to display the Control Source parameter page (see Fig. 4).
8. Use the CURSOR buttons to select the EFX Ctrl 1 Control Source parameter.
9. Use the VALUE dial to select Foot.
10. Use the VALUE dial to set the Depth parameter to "+63."
 
Other Patches that use the rotary effect algorithm are:
  PR-A:49 AugerMentive
PR-A:50 Perky B
PR-A:51 The Big Spin
PR-A:52 Roller Spin

Note: You can also control the speed of the rotary speaker effect in Performance mode, although you will need to make sure that the MIDI receive channel for the Part you wish to affect is the sam as the control channel (on the System MIDI page).