Re: DIY Parabolic Dishes.

["John Hartog" hartogj]

Wow: thanks Steve, Klaus, Orioki, Martyn, Rich, Walt, Randolf, and
mdfrancey all for bringing new light to this subject.

I received the Wahlstrom paper from Walt and found it informative and
helpful towards making a decision about focal length.  I'm thinking
now I'll try a focus of 1/4 dish depth as the basis for my design.

Rich, you wrote:
> I like parabolics for what they are and am not a person that needs to
> be sold on them.  There still should be a eq curve recommended as the
> 25 db on the up freqs are killers for some.
>
> There just are too many people putting out cd's with a dish that can
> not hear high to eq those highs.

Wahlstrom mentions filtering "-6 dB per octave above 1000 Hz to
compensate for the reflector response =85"  Is that close to what you
would suggest?

John Hartog