| Concentric Phase Aligned Array ™ (CPAA) |
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CPAA
Standard ceiling-mounted coaxial systems are typically used for distributed paging systems. Typically, these systems are composed of a large cone woofer surrounding a compression driver mounted to a small horn flare. Drawbacks of such a design include "boomy" bass response, narrow midrange dispersion at the top of the woofer's range and excessively wide midrange dispersion at the bottom of the compression driver's range. The problem is the HF horn is invariably too small and the woofer to large to function effectively at the crossover frequency. This translates into uneven frequency response everywhere but directly beneath the loudspeaker - making for a rather ineffective paging system.
The Concentric Phase Aligned Array™ (CPAA) addresses this design by taking an opposite approach by using a large axis-symmetrical HF horn flare surrounding a LF section that is comprised of smaller flare-mounted cone transducers. The CPAA design provides superior SPL and consistent directivity over a wide bandwidth - making for a very effective paging system. |
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