Pioneer PDP-501MX Technical Manual page 35

Special Installation (Ceiling-suspension (with wires))
Methods for securing: Basic methods for securing the device are shown below. Avoid blocking or covering areas, aside
from those indicated by . The method indicated with cross-hatching should be avoided.
Before attaching the unit to fittings, double-check that the thickness and height of the fittings
and the number of fixing bolts is correct. (Also refer to 3.4.1 Mounting to Fittings)
More than 700 mm
More than 700 mm
35