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C
ONFIGURABLE
D
IRECTIVITY
D
EVICE
4.2 When & where to use Configurable Directivity flanges
The diagrams show audience area coverage for a stereo system. While the GEO cluster will deliver
even SPL from the front to the rear of this audience area, there are “holes” near the front in the centre
and at the outside edges. We cannot fill the outside coverage gaps without enlarging the centre gap,
and vice versa (left figure below).
If 120° Configurable Directivity Devices are installed at the bottom cabinet of the clusters, coverage will
look more like the pattern in right figure below.
-6dB coverage, all GEO D10’s in 80° configuration
-6dB coverage, bottom GEO D10’s in 120° configuration
In curved vertical arrays, the 120° Configurable Directivity Device can be used:
•
On the bottom row of curved vertical arrays, to fill in coverage gaps in the front rows.
•
On all rows of curved vertical arrays, in cases where 120° of horizontal coverage is
preferred to 80°.
Figure below shows isocontour coverage for 80° and 120° configurations.
FIGURE 3: 80° AND 120° CONFIGURATIONS ISOCONTOUR COVERAGE
