Jean Michel on LeCleac'h horns - Page 52 - diyAudio
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Old 19th September 2009, 12:00 PM   #511
soongsc is offline soongsc  Taiwan
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I like to start out with the expectation that better performance can be accomplished with deeper understanding of design aspects. I'm sure there are many DIYers that like to try what's available on the market, but I would think life would be dull if we think the limits have already been reached.
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Old 19th September 2009, 01:15 PM   #512
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by tinitus View Post

Research is very good, and some of the sims does seem very good
They are indeed very educational and informative
I quote myself, just to avoid any misunderstanding

I like to look at all the sims, or at least the few I understand
I also think much of it is very good job
I think its all very good, and positive

Still, nothings being built
My point is whether its perceived as being too complicated to make it work, and maybe scaring many people to at least give it a try
Well, its not cheap, and especially not if it fails

No doubt about it, I and probably many others have learned a lot, and got lots of inspiration
Still, very little being built

But please continue researching
I wouldnt want any other way

Last edited by tinitus; 19th September 2009 at 01:18 PM.
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Old 19th September 2009, 02:27 PM   #513
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Quote:
Originally Posted by tinitus View Post
Still, nothings being built
Au contraire - 320hz LeCleac'h horn for a JBL 2435 that I will hopefully get playing, if not actually finished, this week:

Click the image to open in full size.
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Old 20th September 2009, 03:27 AM   #514
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Cool John!

MDF?
Did you turn that, or make it on your router?
If on the router, what was the step-over?
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Old 20th September 2009, 04:08 AM   #515
Pano is offline Pano  United States
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320Hz?
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Old 20th September 2009, 03:47 PM   #516
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Thanks. It is MDF, and I did make this on my router - you can see some parts for the throat of the second horn to the right and behind the horn I'm holding up. It's non-symmetrical there - it has a foot attached, so it wouldn't be possible to make on a lathe. The pic below is of some of the throat parts before assembly.

Click the image to open in full size.

Step down was between .04 and .01", although I also used an optimized machining setting that limited scallops to a height of 0.001 so in some areas it could have been finer. Basically it still needs a bit of sanding the way I cut it in order to get it perfectly smooth.
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Old 20th September 2009, 05:11 PM   #517
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Thanks again John
Do you have any more info on your router written down anywhere?
I really do need to sit down & build one sometime.
Can only do so much w/ a manual mill & lathe...
Need to look into retrofitting them for NC also...
(Should probably take this elsewhere, as not to thread-jack).
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Old 20th September 2009, 05:26 PM   #518
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No, I don't really have anything written on my webpage or anything like that. I just have it all in cad and my design spreadsheets. It has a 4'x4'x6" cutting envelope. Here's a pic from before it was covered in sawdust:

Click the image to open in full size.

I'm planning on upgrading it to a water cooled 3 phase spindle, THK rails and rack and pinion drive this winter to increase my cutting speed, improve cut quality and reduce maintenance. It's a lot of fun to play with but the machine itself can be a black hole for time and money if you don't watch out.
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Old 2nd October 2009, 02:42 PM   #519
jzagaja is offline jzagaja  Poland
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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/
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Old 2nd October 2009, 04:23 PM   #520
vuki is offline vuki  Croatia
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Wow!
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