Abstract
The design and construction of wide-band and efficient acoustic projectors has long been considered an art beyond the capabilities of many smaller groups. The result is that expensive commercial acoustic projectors are purchased; in many cases, unnecessarily. This paper shows how, by using some simple concepts and straightforward experiments, reasonably complicated acoustic projectors can be designed and built by almost anyone with access to a machine shop and a test laboratory. The complete design process is illustrated by some specific examples used to highlight the important steps.
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