Martin Audio MLA User Manual page 397

MLA System
USER GUIDE
The key figure is the angle of the bottom cabinet with respect to the flying grid. This will equal the last figure in the blue column
unless the grid is at an angle in which case the required angle is shown on the line below the table;-
This is the angle that needs to be selected using one of the two ground stack bars, for an upwards tilted array with positive angles
the short ground stack bar is used, for arrays with a downward tilt to the bottom cabinet with negative angles the long ground
stack bar is used. The final section on the Ground Stack tab shows the angles that can be obtained with both bars;-
In our example we require a downward tile of 4⁰ on the bottom cabinet so the long ground stack bar is required using hole 4.
MLA System User Guide V2.1
397