* = approximate speed of sound in m/s. Varies with temperature (see Section 2a).
Arcsin means “the angle whose sin is ...”
Flat fronted cluster coverage patterns will be confined to one main lobe whose mid-
bass crossover directivity is proportional to the size of the cluster.
The medium sized array (left) has significant output to ±90º whereas the large array’s
±90º output is dramatically reduced.
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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