Posted by Bill Wassilak [ 65.115.221.98 ] on June 08, 2004 at 13:23:44:
In Reply to: Array types posted by GGeorge on June 07, 2004 at 18:47:18:
>>Is a line source always a vertical array?
Yes, they have a very very narrow vertical dispersion, while maintaining a wide horizontal dispersion.
>>Is a Bessel array always square?
Usually, or close to it, so you can do some neat things with them, like high SPL's or for beam steering applications and frequency shading and some other things. JBL has a tech paper on beam steering and freq. shading for bessel arrays and the principles behind it, see link below.
Phillips corporation holds the patent and licensing for Bessel arrays so if you're going to use them commercialy(sp) you may need a license.
HTH
Bill W.
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