The narrow vertical pattern achieved by line arrays has prompted much interest in the method for many forms of sound reinforcement in recent years. The live sound segment of the audio community has used horns and compression drivers for sound reinforcement for several decades. To adopt a line array philosophy, to meet the demands of high level sound reinforcement, requires an approach that allows for the creation of a line source from the output of compression drivers. Additionally it is desired that the line array take on different vertical patterns dependant upon use. This requires the solution to allow for the array to be articulated. Outlined in this work is a waveguide/compression driver combination that is compact and simple in approach and highly suited for articulated arrays.
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