--- layout: default title: Working With Extenders menu_title: Working With Extenders ---

Extenders will require a custom file as there are no combinations listed at this time. The best way is to start with the mc.device file and copy it to a new name such as xt+mc.device and then edit that file. It is best to name the file with the order the devices are expected to be used in as the position of the master device is specified in this file.

The two lines of interest are:

 >Extenders value="0"/>
 >MasterPosition value="0"/>

Add these two lines if they are not present. The Extenders value is the number of extenders used and should not include the master in that number. That is, it should be the total number of units minus 1. The MasterPosition value is the position from left to right where the master unit (with the master fader) is, starting at 0. So if there are three surfaces, MasterPosition with value 0 would be master on the left, MasterPosition with value 1 would be master in the middle and MasterPosition with value 2 would be master on the right.

If the MasterPosition value does not properly match the physcal position and MIDI port, the master fader and global controls will not work. The master unit will act like an extender.