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9Pi mid-bass horn dimensions??? [message #49985]

Wed, 06 September 2006 11:22

Bill Epstein
Messages: 1088
Registered: May 2009
Location: Smoky Mts. USA

Illuminati (2nd Degree)

I'm getting hypotenii of 41 1/2" with a 75 degree angle from the 7" aperture to the 28" mouth?
Is that close?

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Re: 9Pi mid-bass horn dimensions??? [message #49987 is a reply to message #49985]

Wed, 06 September 2006 16:26

Wayne Parham
Messages: 18680
Registered: January 2001

Illuminati (33rd Degree)

The midbass horn used in the 9π loudspeaker is a straight sided horn designed to be used with a 15" driver. Each wall angle is 20° so the total coverage angle is 40°. The length is 32", mouth dimensions are 28" x 28", throat is 7.5" x 7.5", front chamber is 800in³ and rear chamber is 1200in³. Here are the Hornresp parameters for the horn with a JBL 2226: