Conical horn calculation - diyAudio
 Conical horn calculation
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 19th April 2014, 10:24 AM #1 diyAudio Member   Join Date: Nov 2002 Location: Hungary 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?? Greets: Tyimo
 20th April 2014, 09:42 AM #2 diyAudio Member   Join Date: Nov 2002 Location: Hungary Hmmm...
 20th April 2014, 10:55 AM #3 Account disabled at member's request   Join Date: Mar 2005 Location: UK Not all of us are here 24/7. 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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Quote:
 Originally Posted by Tyimo 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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 20th April 2014, 02:25 PM #5 diyAudio Member     Join Date: Oct 2012 Location: Virginia Lots of good info here: Horn Theory
 20th April 2014, 03:35 PM #6 diyAudio Member   Join Date: Nov 2002 Location: Hungary Thanks Guys! Happy Easter! Tyimo
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Join Date: Mar 2005
Location: UK
Quote:
 Originally Posted by xrk971 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.

 20th April 2014, 05:08 PM #8 diyAudio Member   Join Date: Sep 2008 Location: Bristol Conical horns 600Hz and up My conicals I just finished. (Experimental) Can send you the files I used if you want?
 20th April 2014, 05:48 PM #9 diyAudio Member     Join Date: Jun 2003 Location: Chamblee, Ga. None of your pictures display for me.......... GM __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
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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
 iwata horn new simple 4 inch .png (12.5 KB, 138 views)
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