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What's So Sacred About Exponential Horns?

The maintenance of constant directivity with frequency in high-frequency exponential horns is quite difficult. Two main sound industry solutions are the multicell and radial/sectoral horns. While the multicell exhibits fairly constant directivity, both designs suffer from mid/high-frequency polar lobing and midrange narrowing, and the radial shows continually decreasing vertical beamwidth as frequency increases. A new series of horns which optimally joins a modified conical horn with an exponential throat section corrects these problems, while offering very well behaved polar patterns and constant directivity up to 16 kHz.

Author: Keele, Jr., D. B. (Don)
Affiliation: ELECTRO-VOICE, INC., BUCHANAN, MI
AES Convention:51 (May 1975) Paper Number:1038 Import into BibTeX

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