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Re: DIY Parabolic Dishes.

Subject: Re: DIY Parabolic Dishes.
From: "mdfrancey" mdfrancey
Date: Mon Oct 2, 2006 6:25 am (PDT)
--- In  "John Hartog" wrote:

> Thanks for your perspective.  If it's not too much trouble, please
> email me the Sten Wahlstrom pdf =96 whenever you get the chance.

I checked out this article when Mr. Knapp mentioned it some time ago.
 It is available at most large university technical libraries for the
cost of a photocopy:

"The Parabolic Reflector as an Acoustical Amplifier", JAES Volume 33
Number 6 pp. 418-429; June 1985

Highly recommended!  If you aren't up to the math, you can just ignore
most of it (the hardcore stuff is at the back anyways) and simply
absorb the results.


This is not as comprehensive, or useful, as the Wahlstrom paper.

If there is a PDF file of Wahlstrom's analysis, copyright should be
figured out and it ought to be hosted somewhere.  Telinga ought to
include it with their products as a kind of technical appendix.

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