Posted by Bill Fitzmaurice [ 152.163.252.199 ] on August 05, 2004 at 11:59:57:
In Reply to: Bill Fitzmaurice Folding Geometry posted by adavis464 on August 05, 2004 at 09:42:56:
The high end will roll off when you don't use rounded bends. Since this is a sub and I wanted the high end to roll off so I left the bends squared. In my DR horns, which are full range, I use rounded bends and they're good up to at least 2kHz, basically needing to be crossed over when off-axis response starts to deteriorate.
My flare for subs has a much longer pathway to cross-section that the usual. This allows a far deeper extension and efficiency from a smaller package than is possible with standard flares.
By and large you can do just about anything folding wise up to about 200Hz, but much above that you have go to round bends.
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