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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: RE: Comp Driver w/ different horns and their effect posted by John Sheerin on February 23, 2009 at 18:34:10:
Hi folks. here are curves of a radial conical horn.
The mouth reflections are minimal. This is due to their mouth geometry being upset due to horn opening.
I did not somehow "miss" the mouth rollback issue.
The Keele double the flare foldback ( roundover) at the last 20% of horn length at the mouth is a good "best fit" but not the only answer.
(I have in fact built most of the Geddes designs, and tested them, along with parabolic,catenoid, shperical ( not to be confused with tractrix.various values of T, and so on.)
I have purposely terminated the mouths of my horns in different ways, based on specific horn targets.
Yorkville was the first company to make a tractrix horn with a pinched throat ( made especially to fit the RCF N252 driver). This horn manufactured in 1989. It was later evolved into a conical/tractrix combination. The first 15% of the horn opening, is quite important to horn design. Often overlooked.
As always , I welcome test curves of other designs.
After 30 years of building the wrong ones first, I like to think I got the last some right.
Listening to horns when the design is finished is a big help, it is not all numbers.
Best, Bill
Other stuff at my Gallery........
https://gallery.audioasylum.com/cgi/upload.mpl?session=
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Follow Ups
- Mouth Termination - RCA-fan 02/24/0908:40:32 02/24/09 (2)
- RE: Mouth Termination - nl 13:58:34 02/27/09 (0)
- Typo - RCA-fan 13:59:06 02/24/09 (0)
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