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Multi-Way Conventional loudspeakers with crossovers

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Old 8th July 2014, 08:57 AM   #691
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Join Date: Mar 2012
Yes, I have seen the video. It seems easy enough to make the curve you want, but I canīt make sense of the use of ellipses - it seems to me that what you need are sections of parabolas, mirrored on both axis. The focus of the parabola will be adjusted to get the curve you want. Iīm no math genious (thatīs an understatement :-)) but experimenting with ellipses they donīt seem to give equal path lengths - only approximations, whereas parabola sections will give exactly equal path lengths.

Sure, Iīd like to try it out with a 3D printer - but it would be nice to hear what others think first, if itīs an idea worth pursuing or not.
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Old 9th July 2014, 07:12 AM   #692
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Join Date: Oct 2006
Location: San Diego
Cookie Monster, I think your design looks promising. It might need to be a bit thicker, due to the reduction in the area, but YMMV
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Old 18th August 2014, 06:57 PM   #693
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Join Date: Nov 2007
Location: Dallas
Regarding your pile of junk dishes. Those are all offset types.
In other words, none of them contain "center" of the parabola.
There's a good chance you could clover 3 or four of them into
a much larger chunk of parabola without the leaves touching.

I had such a pile in my garage till recently...

Would be really hard to align for microwave purposes, which
was my original plan. But if you are just making a pair in the
back yard for acoustic toys....

Last edited by kenpeter; 18th August 2014 at 07:04 PM.
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