Straight column gain and coverage
The following table shows typical Longthrow high-mid/high gain (wrt a single
Wavefront W8C) plus the mid and high frequency vertical coverage provided by
various straight vertical line arrays.
W8CTs in high-mid/high gain vertical coverage (-6dB points)
(wrt single W8C) high-mid high
1 (single row) 9.5dB 7.42º 3.70º
2 (double row) 16dB 3.72º 1.86º
4 22dB 1.86º 0.93º
6 25dB 1.24º 0.62º
8 28dB 0.93º 0.46º
10 30dB 0.74º 0.37º
The above means that, for practical sound reinforcement uses, a long straight
column's mid and high frequency coverage must be regarded as being cylindrical in
nature. Low-mid vertical coverage will widen in the farfield depending on the height
of the column but users should be guided by the following coverage shape to ensure
consistent high frequency coverage.
Straight W8CT column mid/hf coverage = 55º (horizontal) x the column height
A long, straight Wavefront Longthrow column will cover vast flat outdoor areas if
you aim the column axis towards the rear of the audience. Remarkable results can be
obtained indoors using continuous columns running from stage level to the maximum
seating height.
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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