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Multi-Way Conventional loudspeakers with crossovers

Jean Michel  on LeCleac'h  horns
Jean Michel  on LeCleac'h  horns
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Old 19th October 2009, 02:37 PM   #531
alzin3187 is offline alzin3187  France
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only for france italie belgique we built round horns according JMLe Cleac'h plans t 0.8
We have DIAMETER 145mm, 240mm (fc870hz), 410mm for 1" (in FIBER GLASS )
other 410mm (fc500hz) for 1.4 1.5 2" 5in Fiber mixed with fine plaster)
other 560mm (fc(320hz), 820mm (fc204hz)small lipps or better 960mm (latge lipps)
other 680 and 800mm special for fostex aer lowther (angle source different)(fiber glass)
audiopavillon@club-internet.fr gerard
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Old 21st October 2009, 09:56 AM   #532
Jmmlc is offline Jmmlc  France
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Hello,

The "Grande Castine" commercialized by Musique Concrête is now in demonstration near by of Paris (France).
You can find listening impresions at the bottom of the (automaticaly translated) page:

Google Traduction

The 3 horns used in the Grande Castine are "Le Cléac'h horns".

Best regards from Paris, France

Jean-Michel Le Cléac'h
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Old 21st October 2009, 10:07 AM   #533
alzin3187 is offline alzin3187  France
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Quote:
Originally Posted by alzin3187 View Post
only for france italie belgique we built round horns according JMLe Cleac'h plans t 0.8
We have DIAMETER 145mm, 240mm (fc870hz), 410mm for 1" (in FIBER GLASS )
other 410mm (fc500hz) for 1.4 1.5 2" 5in Fiber mixed with fine plaster)
other 560mm (fc(320hz), 820mm (fc204hz)small lipps or better 960mm (latge lipps)
other 680 and 800mm special for fostex aer lowther (angle source different)(fiber glass)
SEE Horn Pictures in my album
audiopavillon@club-internet.fr gerard
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Old 24th October 2009, 08:05 PM   #534
Defo is offline Defo  Norway
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How does the round LeCleac'h horns peform in in terms of beaming in the upper frequencies? And what is their dispersion to begin with? More spesificly the Azurahorn AH-550.
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Old 25th October 2009, 12:35 PM   #535
jzagaja is offline jzagaja  Poland
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Jean Michel  on LeCleac'h  horns
Anyone modeled elliptical JMLC horn? Surface loft through profiles (slices) results in a non-smooth contour.
Attached Images
File Type: jpg Loft.jpg (74.6 KB, 562 views)
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Old 25th October 2009, 02:10 PM   #536
soongsc is offline soongsc  Taiwan
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With cad programs, I would recommend a rotating sweep.
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Old 25th October 2009, 10:04 PM   #537
SunRa is offline SunRa  Romania
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Quote:
Originally Posted by jzagaja View Post
Anyone modeled elliptical JMLC horn? Surface loft through profiles (slices) results in a non-smooth contour.

Don't know about modelling but I know someone who build it: Eliptical horn
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Old 26th October 2009, 06:27 PM   #538
jzagaja is offline jzagaja  Poland
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Jean Michel  on LeCleac'h  horns
Serious work SunRa.

Soongsc - elliptical JMLC is different, you can't just draw two guidelines and two ellipses. Surface approximation through point cloud is of course much quicker especially in Mastercam.
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Old 26th October 2009, 06:38 PM   #539
tinitus is offline tinitus  Europe
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Jean Michel  on LeCleac'h  horns
A refined version of this 20USD thing
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File Type: jpeg McGee.jpeg (17.4 KB, 473 views)
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Old 26th October 2009, 06:42 PM   #540
Jmmlc is offline Jmmlc  France
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Hello,

I used to calculate 3 types of horns having a ratio H/W at mouth different of 1.

Le Cléac'h elliptical with low HF directivity :
http://www.diyaudio.com/forums/attac...amp=1212759567

This is the one Jzagaja as shown.


quasi Iwata / JMLC method
http://www.diyaudio.com/forums/attac...amp=1212760839

May be this is SunRa's horn but it is doubtful (we should have a lateral view of the horn to confirm or not)

constant horizontal directivity
http://www.diyaudio.com/forums/attac...amp=1212761603

Best regards from Paris, France

Jean-Michel Le Cléac'h


Quote:
Originally Posted by jzagaja View Post
Serious work SunRa.

Soongsc - elliptical JMLC is different, you can't just draw two guidelines and two ellipses. Surface approximation through point cloud is of course much quicker especially in Mastercam.
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