Martin Audio MLA User Manual page 245

MLA System
USER GUIDE
Once you have selected the array configuration select 'Next' and you will see a similar window to the one for MLA, MLD or MLA
Compact;-
Repeat the process of flashing LED badges to ensure that the cabinets are in the correct order. If any are in the wrong position
use drag and drop to reposition them. For a conventional sub stack this may not be vital as the parameters are likely to be
identical for all cabinets but for cardioid or broadside arrays it is essential to ensure that they are correct so delay and other
parameters applied are directed to the correct cabinet. At this stage you can also change the LED badge to flash on the rear.
They are configured for the front LED by default signified by the 'F' on the thumbnails. Double click directly on the badge and
you will see the 'F' become a 'B' to signify the back LED. This will flash instead of the front LED when selected. Note that selecting
'B' does not change any internal parameters that may be required for cardioid array operation, if simply changes the LED indicator
from the front to the rear for cabinet identification. All parameter changes must still be entered manually;-
MLA System User Guide V2.1
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