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RE: Constant Directivity Horn Recommendations




You have to look at the throat geometry of all the modern Klipsch horn designs to see the applicability of the throat lens approach (picture above).

Virtually all the Klipsch horns use ~90 degrees of horizontal coverage and ~60 degrees vertically. The main Klipsch horn designer (Delgado) has stated that, in multiple tests over the years, the 90 degrees of horizontal coverage is preferred by most, and the 60 degree is about all what you can squeeze down to without suffering pattern flip (loss of vertical directivity at lower frequencies).

I'd always wondered why you didn't increase the coverage angle in your initial "Synergy" designs to 90 degrees for this reason. I guess I don't have much need for PA (fixed of mobile) applications, only for home hi-fi.

Chris
"As far as the ear can tell, consistently clean and spacious bass can be reproduced only by a driver unit coupled to a horn-type acoustic transformer..."; Jack Dinsdale, May 1974

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