Lexicon MPX G2 MIDI Maps
Lexicon MPX G2 MIDI Maps
This article provides information on setting MIDI Maps on the Lexicon MPX G2 guitar effects processor.

MIDI Maps allow you to assign any program number on the R1 to any program number on the MPX-G2.

MIDI Map diagram

Though MIDI Maps are more complicated to set up than direct program change number mapping (the default mode), MIDI Maps are much more flexible and even have some bonus features that are not available in the normal program change mode.

Basic MIDI Map Set Up

There are actually two ways of setting up the MIDI Maps in the MPX G2: Manually or using the Learn Mode.

Manual Mode

  1. Press the SYSTEM button 2 times (to get into the SYSTEM mode at the top of its menu)
  2. Turn the knob till "MIDI Pgm Maps" is displayed
  3. Press the '>' key ("Yes" key) two times till the "MIDI Assign Mode" screen is shown.
  4. Turn the Knob till "Manual" is displayed
  5. Press the '>' key to get to the Map setup screen.

MIDI Map setup screen

On this screen there are two editable fields: an MPX G2 program field and a MIDI program change number field.MIDI Map setup screen

To modify the MIDI Map, you go back and forth between the two fields changing values. Press the '>' and '<' buttons to change fields. The active field will blink.

The MIDI Prog. Number represents the buttons on your R1. In the image above, button 1 will select MPX G2 program 1 "G2 Blue". I you select the MPX G2 Program number field and turn the knob, other MPX G2 programs will be selected. The value you leave it on will be the one that the system uses when you enable the MIDI Maps mode (see below).

 

MIDI Map setup screen with prog changed

With this setting, pressing button 1 on the R1 will select MPX G2 program number 252 "Jam Flange".

To change the setting for button 2, press the '>' key to make the "Pgm#" field active then turn the knob to select "2". Press the '<' button to make the MPX G2 program number field active then turn the knob to select a different program.

Though you can't see it, the MPX G2 actually keeps a table for the MIDI Map that saves all of the assignments you make.

Pgm# MPX G2 Program
1 252 - Jam Flange
2 255 - Big Finish
3 251 - Bobs Lead
4 001 - G2 Blue
5 ...
...  
128 ...

Learn Mode

The other way of setting up MIDI Maps is using the Learn Mode. The Learn mode is actually a lot easier than the Manual mode.

To use the Learn mode, you have to return to the MIDI Assign Mode screen and set it for "Learn". From the Manual Setup screen you can just press the '<' one or two times to get to the screen. The following instructions show you how to get to it from anywhere in the system.

  1. Press the SYSTEM button 2 times (to get into the SYSTEM mode at the top of its menu)
  2. Turn the knob till "MIDI Pgm Maps" is displayed
  3. Press the '>' key ("Yes" key) two times till the "MIDI Assign Mode" screen is shown.
  4. Turn the Knob till "Learn" is displayed
  5. Press the '>' key to get to the Map setup screen.

The Learn Mode setup screen is similar to the Manual setup screen:

Learnign the MIDI Map

The big difference is in how it operates.

To map R1 buttons to MPX G2 programs in the Learn mode, you simply press the button you want to assign on the R1 then turn the knob on the MPX G2 to select a program for it. When you press the button on the R1, the '---' in the image above changes to the program for the button you pressed. Programming MIDI Maps using the learn mode is very quick.

Enabling the MIDI Map mode

In order for you to actually use the MIDI Map you've created, you need to put the system into the MIDI Maps mode. Thankfully, it's really easy to do:

  1. press the PROGRAM button
  2. press the OPTIONS button
  3. select "Show members of MIDI Maps" (by turning the knob)

selecting the MIDI Map mode

4. press of the OPTIONS button (puts you back in the normal Program mode with MIDI Maps selected)

MIDI Map Mode

 

What's with the little black squares?

Throughout the MPX G2 user interface, the little squares indicate that the parameter has an option; you can press the OPTIONS button to get to an advanced setup screen. Normally these advanced menus are different for each field but for the MIDI Maps they are the same.

If you press the OPTIONS button when either field in the setup screen is active, you are taken to a MIDI Map Options menu. In this menu you have the following options:

  • Fill the MIDI Map with MPX G2 programs starting at the program of your choice
  • Clear the map
  • Clear just a section of the map.

The change takes place when you press the OPTIONS button again to exit the menu. You press the '<' and '>' buttons to change selections.

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Background image by Pauline Moss. at http://paulinemoss.deviantart.com/art/Stars-307119758