07. What’s So Sacred About Exponential Horns?

AES Convention: 51 Paper Number:1038
Publication Date: 1975-05-06

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.

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Keele, Jr., D. B. (Don); 1975; What’s So Sacred About Exponential Horns? [PDF]; ELECTRO-VOICE, INC., BUCHANAN, MI; Paper 1038; Available from: https://aes2.org/publications/elibrary-page/?id=2394