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Old 19th April 2014, 10:24 AM   #1
Tyimo is offline Tyimo  Hungary
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Default Conical horn calculation

Hi!
I read many nice thinks about conical horns for example on the Oswalds Mill Audio web site, but I saw nowhere how to calculate it.
Has somebody any info about it?
Is it possible to use Michael Zhang's ML util program for it??
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Old 20th April 2014, 09:42 AM   #2
Tyimo is offline Tyimo  Hungary
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Hmmm...
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Old 20th April 2014, 10:55 AM   #3
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Google is your friend. Try typing 'Conical Horn formula' into it. I obtained 4,200,000 hits. Not all will be relevant of course, but there are many, many articles & papers on horns, a reasonable number of which refer to the conical type:

Simple derivation assuming free-space & full-sized terminus: Sl = St x^2
where
Sl = terminus CSA
St = throat CSA &
x = axial horn length

Conical horns are rather less efficient than a hyperbolic or exponential for e.g., and have linear expansion, so no flare frequency per se, but nominally at least distortion is low.
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Old 20th April 2014, 02:13 PM   #4
GM is offline GM  United States
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Quote:
Originally Posted by Tyimo View Post
Is it possible to use Michael Zhang's ML util program
Don't see how, but I'm no great mathematician. Hornresp makes it simple enough though.

GM
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Old 20th April 2014, 02:25 PM   #5
xrk971 is online now xrk971  United States
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Lots of good info here:
Horn Theory
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Old 20th April 2014, 03:35 PM   #6
Tyimo is offline Tyimo  Hungary
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Thanks Guys!

Happy Easter!

Tyimo
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Old 20th April 2014, 03:45 PM   #7
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Quote:
Originally Posted by xrk971 View Post
Lots of good info here:
Horn Theory
Just so, but as I recall Martin focuses on the exponential profile & does not provide dedicated derivations for other types of expansion on his site, though he refers to them in a couple of sections.
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Old 20th April 2014, 05:08 PM   #8
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Conical horns 600Hz and up


My conicals I just finished. (Experimental)
Click the image to open in full size.

Can send you the files I used if you want?
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Old 20th April 2014, 05:48 PM   #9
GM is offline GM  United States
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None of your pictures display for me..........

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Old 20th April 2014, 06:02 PM   #10
tinitus is offline tinitus  Europe
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I have used this calculator simple
seems to work
but I don't know if the result is correct

mh-audio.nl - Bass Horn

planning to construct a mid/high horn for a 4" pro array widerange
it will be a vertical slit throat, and maybe with a vertical phase plug

but conical it is not
Attached Images
File Type: png iwata horn new simple 4 inch .png (12.5 KB, 101 views)
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