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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 28th April 2016, 02:03 PM   #1781
jeovanny viteri is offline jeovanny viteri
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Default a search question

were can I find information ,design equations and schematics about the VLADIMIR CARVEAUX infra sound horn
please direct me to the appropriate site or thread
if possible mail the answer to my mail box: gonzaleshuerta24@gmail.com
thank you
jeovanny
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Old 14th June 2016, 08:11 AM   #1782
Neman2000 is offline Neman2000
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Default Получить чертёж с помощью HornResp,это легко!

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Originally Posted by karahana View Post
I have found the spreadsheet. But it has Old_calculation and New_calculation
The trick is that the new_calculation is dated 2007 and the old one -2009
Here are the pictures.
Does anybody know where is the new one or the right one?
Get the drawing by means of HornResp,this easy!
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File Type: jpg 01.jpg (101.9 KB, 637 views)
File Type: jpg 02.jpg (27.5 KB, 592 views)
File Type: jpg 03.jpg (54.8 KB, 571 views)
File Type: jpg 04.jpg (111.1 KB, 565 views)
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Old 15th June 2016, 06:39 AM   #1783
David McBean is offline David McBean  Australia
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Quote:
Originally Posted by Neman2000 View Post
Get the drawing by means of HornResp,this easy!
For axisymmetric Le Cléac'h horns, the Hornresp 'Standard Profile' option gives a result identical to the 'New Calculation' spreadsheets included in Jean-Michel's 2007 and 2009 Excel workbooks. There is no difference in the New Calculation results produced by the 2007 and 2009 spreadsheets, and while they provide a reasonably close approximation to the theoretically perfect profile, they are not an exact match.

The Hornresp 'Exact Profile' option exactly matches the theoretical ideal for an axisymmetric Le Cléac'h horn, and is therefore the suggested one to use.

See the following post for further background information.

Jean Michel on LeCleac'h horns
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Old 13th August 2017, 09:39 AM   #1784
hsiehwm is offline hsiehwm  Taiwan
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A new 1kHz tweeter horn. Horn expansion follows JMLC method,
The inner shape is similar to JBL 4367 waveguide.
more information :
HIFIDIY??-??????? - Powered by Discuz!=
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Old 14th August 2017, 12:23 PM   #1785
Pano is offline Pano  United States
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Jean Michel  on LeCleac'h  horns
Thanks for that! I went to the other forum and read your posts. It took some reading and head scratching, but I finally saw what you are doing, and how. Nice way to build up a complex shape via layers.
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Old 14th August 2017, 08:24 PM   #1786
Zero D is offline Zero D  United Kingdom
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@ hsiehwm

Interesting

Be nice if you could post the details from the other thread, in here in English
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Old 4th September 2017, 06:11 AM   #1787
Arno Pf is offline Arno Pf  Netherlands
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Long thread (which I will read fully at a certain point ;-) ). Without opening a new thread, what is the right line of thought matching the best combination of cut-off frequency (Xo), JMLC horn choice (and why on that frequency) in combination with the TD-2001?
What are the extremes in this regarding side effects or limits in the low frequency region?
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Old 4th September 2017, 06:25 AM   #1788
John Sheerin is offline John Sheerin  United States
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I would also look at what you will be using to cover below the 2001 and where you might need your crossover to be. Then make a LC horn with a flair rate around 1/2 your expected crossover frequency, aiming to have the mouth of the horn be a bit bigger than the LF driver (assuming a direct radiator). This will give you a good chance of matching the horizontal directivity between the two devices through the crossover region. Since the source sizes are about the same, you should have some frequency range to play with in choosing a crossover. You can consider driver linear and non-linear distortion and pick the best compromise.

For example, you use a 15" woofer for the midbass which you know starts to have problems above 800Hz. Then make a LC horn with ~400Hz flair rate which is about the same size as the 15" woofer.
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Old 4th September 2017, 09:41 AM   #1789
Arno Pf is offline Arno Pf  Netherlands
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Quote:
Originally Posted by John Sheerin View Post
I would also look at what you will be using to cover below the 2001 and where you might need your crossover to be. Then make a LC horn with a flair rate around 1/2 your expected crossover frequency, aiming to have the mouth of the horn be a bit bigger than the LF driver (assuming a direct radiator). This will give you a good chance of matching the horizontal directivity between the two devices through the crossover region. Since the source sizes are about the same, you should have some frequency range to play with in choosing a crossover. You can consider driver linear and non-linear distortion and pick the best compromise.

For example, you use a 15" woofer for the midbass which you know starts to have problems above 800Hz. Then make a LC horn with ~400Hz flair rate which is about the same size as the 15" woofer.
Aiming to get the TD2001 started as low as possible (500-800Hz), this would lead to either a JMLC350/400 or even a 600...right? Anyone with first hand experience and data on such TD2001 combinations?
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Old 4th September 2017, 05:40 PM   #1790
Arno Pf is offline Arno Pf  Netherlands
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I am Curious how the SPL curves would look having the TD-2001 on either a Tractrix-350 or a JMLC-600... anyone tried it and measured it?

- Horns by Auto-Tech
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