Bose Panaray MSA12X, Руководство по конструкции

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Design Guide - 7
Selecting Loudspeaker Models, Modules and Beam Patterns
Vocal Range Smoothing Option
The Flat-Floor Optimized beam pattern also has an option called Vocal Range Smoothing. With this option
enabled, the tonal balance from front to back of the room becomes consistent around the vocal range, and
the sidelobes from the beam are suppressed. Again, the trade-off of this option is that you lose a few dB of
headroom. This feature is ON by default and recommended for this beam type.
Flat-Floor Optimized
As the name suggests, Flat-Floor Optimized is a beam pattern that is optimized
for flat floors. With this beam type, you can only steer the beam. Spreading is
not available in this pattern. This beam type achieves consistent coverage from
the front row to the back row of the room, specifically around the vocal range.
Keep in mind that this beam pattern works best when the array is mounted at a
certain height: The bottom plate of the array should be mounted 0.3 to 0.8 m (1
to 2.5 feet) above the ear height of the audience. If the array is mounted higher
than this, or the floor is raked, choose a different beam type.