Martin Alien 05 User Manual page 27

10 Push the base cover up into place and screw it into position using a 2.5 mm
Allen wrench.
11 Rotate the mounting bracket and tilt the sphere to the correct position and
lock them into position using a 2.5 millimeter Allen wrench.
12 Apply power.
Installation using the reversed configuration
In the reversed configuration the base is positioned on the other side of a
ceiling surface and is held in place by the addition of a cover ring (A). This
configuration is not intended for mounting on a vertical surface such as a
wall. The cover ring is held in place by two counter-sunk M4 x 16 mm
screws. These can be used through a ceiling surface that is up to 5 mm (1/5
inch) think. If the ceiling is thicker than this you will need to purchase two
longer counter-sunk M4 screws.
Installing an Alien 05 Stem Mount 27