Acoustic Horn Design – The Easy Way (Ath4) - Page 7

mabat · 17th June 2019, 06:44 AM

Quote:

Originally Posted by carlthess40

Are you making any of these horns? If so do you need any gene pigs for testing?

I want to make some for myself but I'm still exploring possibilities. That's also why I released the tool - I hoped to see more BEM results.
It's actually hard to decide. Too many look promising

mabat · 07:01 AM

In my view, such a tool is particularly good for making studies where you change some parameter(s) just to see the trends. By now it's obvious to me that the mouth termination is of paramount importance. The shape of cross-section may help a bit and it really seems that with a rectangular variety the beamwith control is somewhat more stable at the lower end. That is what I found so far.

TimbreAudio · 17th June 2019, 08:58 AM

Good work!

mabat · 17th June 2019, 01:18 PM

Thanks.

Regarding actual making of the horns -
I'm still wondering what would happen if the horn would be just assembled (glued together) from many thin slices so it would make a stairwise surface. I would have a concern about one or two such discontinuities but what if there are tens of them? Has anyone ever tried to see what would happen?

nc535 · 17th June 2019, 01:51 PM

Make the layers out of a soft wood and it shouldn't be a problem to fill and sand the discontinuities smooth.

mabat · 17th June 2019, 02:24 PM

Oh I would not like to do that. Just wondered what influence would it have on performace of the horn. I have no idea, really. Just in case it would be usable, I would then leave it discontinuous as it would be very easy.

I could maybe simulate that. At least give it a try.

mabat · 18th June 2019, 08:46 PM

Not really a good idea I guess -

mabat · 08:40 PM

I'm working on superformula for shape definition. Not sure about the merit but anyway...

It's just a different equation.

daemonsgr · 19th June 2019, 09:37 PM

Quote:

Originally Posted by mabat

I'm working on superformula for shape definition. Not sure about the merit but anyway...

It's just a different equation.

you re an computational artist for sure

(not sure about the acoustics of this though)

when I get some free time from work I want to prototype one of the ones you posted. I have access to a super cool prototyping workshop at work.

jzagaja · 19th June 2019, 09:52 PM

Star shaped would be interesting for.... Manger transducer with star shaped phase plug

17th June 2019, 06:55 AM	#62
mabat diyAudio Member Join Date: Sep 2004 Location: Prague, Czechia	In my view, such a tool is particularly good for making studies where you change some parameter(s) just to see the trends. By now it's obvious to me that the mouth termination is of paramount importance. The shape of cross-section may help a bit and it really seems that with a rectangular variety the beamwith control is somewhat more stable at the lower end. That is what I found so far. __________________ https://at-horns.eu Last edited by mabat; 17th June 2019 at 07:01 AM.

17th June 2019, 01:18 PM	#64
mabat diyAudio Member Join Date: Sep 2004 Location: Prague, Czechia	Thanks. Regarding actual making of the horns - I'm still wondering what would happen if the horn would be just assembled (glued together) from many thin slices so it would make a stairwise surface. I would have a concern about one or two such discontinuities but what if there are tens of them? Has anyone ever tried to see what would happen? __________________ https://at-horns.eu

17th June 2019, 01:51 PM	#65
nc535 diyAudio Member Join Date: Apr 2011	Make the layers out of a soft wood and it shouldn't be a problem to fill and sand the discontinuities smooth. __________________ My Synergy Corner Horns and Bass Bins http://www.diyaudio.com/forums/multi...bass-bins.html

17th June 2019, 02:24 PM	#66
mabat diyAudio Member Join Date: Sep 2004 Location: Prague, Czechia	Oh I would not like to do that. Just wondered what influence would it have on performace of the horn. I have no idea, really. Just in case it would be usable, I would then leave it discontinuous as it would be very easy. I could maybe simulate that. At least give it a try. __________________ https://at-horns.eu

19th June 2019, 09:52 PM	#70
jzagaja diyAudio Member Join Date: Jun 2004 Location: Szczecin	Star shaped would be interesting for.... Manger transducer with star shaped phase plug __________________ email me jzagaja at gmail


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17th June 2019, 08:58 AM	#63
TimbreAudio diyAudio Member Join Date: Dec 2016	Good work!

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