Jean Michel on LeCleac'h horns

[Jmmlc]

Hello Jzagaja,

Seems the link you gave to us is not very safe (trojan installation has been reported...)

Best regards from Paris, France

Jean-Michel Le Cléac'h

As promised prototype 400Hz JMLC horn with conical adapter for 14deg compression drivers. We can supply any quality horn up to ca. 1 meter length/dia.

http://autotech.pl/

 

[GM]

Thanks, I was wondering where I got it from.

GM

 

[Ed LaFontaine]

My filters (gxxgle) warned of the possibility...I didn't go there

 

[jzagaja]

I'm using Opera 10, Kaspersky IS 8.0.0.56 and got now warnings of any kind. I will report the problem.

 

[jzagaja]

Web site repair will take some time - from my experience up to 2 weeks with Google so here are the addresses:

+48 602-647-173 (handy) or info@autotech.pl
(Mr. Lewandowski Lukas)

 

[jzagaja]

130 US Dollar per pcs. (370 PLN). 18mm MDF flange. More units price negotiable so group order is preffered. Maximum possible diameter 98 cm.

 

[jzagaja]

Colors: white and green, on Spring 2010 blue and yellow. Custom painting is possible but we don't want complaints.

 

[jzagaja]

One of the user of above horn writes it is much better than Stereo-Lab 400Hz Tractrix. Main reason is stereophony. His temporal setup shown on the picture below.

 

[jzagaja]

Another shot.

 

[Pano]

Very pretty. Thanks!

 

[alzin3187]

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

 

[Jmmlc]

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

 

[alzin3187]

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

 

[Defo]

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.

 

[jzagaja]

Anyone modeled elliptical JMLC horn? Surface loft through profiles (slices) results in a non-smooth contour.

 

[soongsc]

With cad programs, I would recommend a rotating sweep.

 

[SunRa]

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

 

[jzagaja]

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.

 

[tinitus]

A refined version of this 20USD thing

 

[Jmmlc]

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/attachment.php?s=&postid=1532641&stamp=1212759567

This is the one Jzagaja as shown.


quasi Iwata / JMLC method
http://www.diyaudio.com/forums/attachment.php?s=&postid=1532652&stamp=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/attachment.php?s=&postid=1532660&stamp=1212761603

Best regards from Paris, France

Jean-Michel Le Cléac'h

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.