Martin Audio MLA User Manual page 156

MLA System
USER GUIDE
As you can see the vast bulk of the audience region is a consistent green with a band of blue indicating the underneath and front
of the balcony. Quite a respectable result.
Note that using the hard avoid feature whilst extremely useful does have some limitations, whilst superb at rejecting sound
behind the array on stage, if used for a balcony front for example it relies on the array being physically positioned exactly as it is
depicted in the software to a fraction of a degree, not easy to achieve with standard electric hoists, plus if the array is not directly
in front of the balcony the hard avoid region which will form an arc from the array, may miss the balcony at the extremes of the
horizontal coverage giving some members of the audience a very poor experience.
MLA System User Guide V2.1
156