Verity Audio Ambience Series, Руководство пользователя

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The COL speakers can cover a big audience area with small variations
in SPL by installing them with the appropriate height and tilt angle.
The example diagrams below comparea COL with a standard point-
source speaker in terms of SPL coverage on a certain listening plane.
On the 3.5m to 15m distance range the SPL of the COL goes from
107dB to 101dB whereas the SPL of the point-source speaker goes
from 113dB to 101dB. This means a variation of only 6dB for the COL
but of 12dB for the point-source speaker.
When adjusting the height and tilt angle of the COL speakers to get a
high and smooth SPL coverage over a certain area must consider the
sound is emitted from the center of the column, not along its front side.
COL4.3 AND COL8.3 PLACEMENT