User Guide

The U brackets A,B,C & D are specically designed for hanging Cuboid from a
ceiling in landscape mode. Fixing the U bracket is a simple process:
Remove the centre M8 bolt from the top and bottom of Cuboid
Place the U bracket over the loudspeaker and line up the holes with the centre
M8 bolt hole
Use the supplied bolts to x the bracket to the loudspeaker
When the angle is set, x with the supplied locking screw
The coverage specications are useful for informing where the loudspeakers
should be aimed. In any horn-loaded loudspeaker, the optimum output is the
centre axis of the horn where you have maximum level from the system. It
therefore follows that the horn axis should be aimed at the furthest point of the
audience.
Sound level however decreases by 6dB for every doubling of distance. This
means that 96dB at 5m from a loudspeaker will reduce to 90dB at 10m – a
signicant drop in energy.
Ceiling mounting using the U bracket Loudspeaker aiming
25 deg
IDEAL AIMING FOR A 50 DEGREE VERTICAL HORN
-6dB AIMED AT NEAREST
POINT OF COVERAGE
-6dB REDUCED ENERGY
ON CEILING
9/16
Cuboid
Loudspeakers
Loudspeakers
USER GUIDE
© 2021. Optimal Audio Group Ltd. (v1.1)
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