Inter-M PS-80 - Manual (Page 12)

10 PS-80 (FIXED-INSTALLATION 5" POWERED SPEAKER)
· Advantage & precaution of ceiling installation
Install a speaker on the ceiling tightly causes increasing
low low-pitched sound as installed closed to the walls.
Even if it generates soft tone, the sound clearness may
be dropped. Recommend to control the tone by EQ on
external panel.
The bracket which sells separately with main product is
the best way to install the speaker on the wall. The
user can change angles easily with the angle control
function.
CEILING
SIDE VIEW FRONT VIEW