Figure 27: Spl Map Of Two Full-Range Columns (1 Khz) - Community Entasys Installation & Operation Manual

O N E F U L L - R A N G E A N D O N E L O W F R E Q U E N C Y
For applications where additional directivity control is required only for the low frequency region, a single
full-range column and a low frequency column may be used. This will leave the opening aperture for the
radiation above approximately 1 kHz unchanged from that of a single full-range column. The added length of the
line array below 1 kHz will result in a more narrowly focused main lobe at these lower frequencies.
Figure 28 shows an SPL map for a single ENTASYS full-range column for the one octave band
centered at 500 Hz . Figure 29 shows the same map but with a single low frequency column placed on top of
the full-range column. A comparison of these SPL maps shows the increased directivity (more narrow
beamwidth) of the array using the low frequency and full-range columns. Further increase in low frequency
directivity control may be achieved by adding a second low frequency column to this array. Refer to Table 12 for
more details on the frequency ranges affected by the increased line length of multiple columns.
ARRAY COVERAGE CONFIGURATIONS
Figure 27: Two ENTASYS Full-Range Columns (1 kHz)
C O L U M N
Community ENTASYS Installation/Operation Manual — Page 48
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