Posted by mike.e [ 202.49.5.53 ] on March 10, 2005 at 17:09:29:
In Reply to: Is there a formula to determine the frequency that a 1" throat 90x40degree horn begins to beam posted by TimG on March 10, 2005 at 11:27:26:
When the mouth is big enough for the walls to control the dispersion,This will happen when more than one wavelength can fit around the mouth perimeter(?)
If you inspect the polar plots of horns from JBL etc youl see in detail.
Some one else can respond in more detail.
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