Nexo GEO S8 - Manual (Page 17)

USING THE CONFIGURABLE DIRECTIVITY DEVICE P.17
When & where to use Configurable Directivity flanges
The diagram below can be considered as a plan view of the audience area shown in Figure 1. Instead of
looking through the sidewall, we are looking through the ceiling. 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.
Figure 1 :Plan view of coverage using two GEO curved vertical arrays
without Configurable Directivity flanges
Figure 2 : Plan view of coverage using two GEO curved vertical arrays.
Both Configurable Directivity flanges have been installed in the
bottom two cabinets of the clusters.
However, if we install Configurable Directivity Devices in the bottom two cabinets of the cluster, coverage will
look more like the pattern in Figure 2.
In curved vertical arrays, the Configurable Directivity Device can be used:
• On the bottom two rows of curved vertical arrays, to fill in coverage gaps in the front rows.
• On all rows of curved vertical arrays, in cases where 240° of horizontal coverage is preferred to
160°.
In horizontal arrays of GEO S830s, the Configurable Directivity Device can be removed to narrow the vertical
coverage of the array from 120° to 80°.
Sectional view of a 100’ deep space, showing coverage alternatives using GEO S830 arrays aimed straight down, with (right) and
without (left) CDD flanges.