L-Acoustics A15i Series Owner's Manual page 76

Rigging procedures
4. Mount the enclosure on A-U15i.
This step requires two operators.
Hold the enclosure at the bottom on each side.
5. Set the angle:
For a single enclosure:
a. Rotate the enclosure to align the second insert with the selected site angle.
b. Drive a screw on both sides.
c. Tighten all the screws.
Apply a torque of 7 N.m.
76 A15i owner's manual (EN) version 1.0