Page 16/93 CONFIGURABLE DIRECTIVITY DEVICE4.2 When & where to use Configurable Directivity flangesThe diagrams show audience area coverage for a stereo system. While the GEO cluster will delivereven SPL from the front to the rear of this audience area, there are “holes” near the front in the centreand 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 willlook 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° configurationIn 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 ispreferred to 80°.Figure below shows isocontour coverage for 80° and 120° configurations.FIGURE 3: 80° AND 120° CONFIGURATIONS ISOCONTOUR COVERAGE
