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Old 13th November 2011, 06:55 AM   #2451
NEO Dan is offline NEO Dan  United States
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Nice
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Old 13th November 2011, 12:24 PM   #2452
Mark Kravchenko --- www.kravchenko-audio.com
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Looks great. I'll have to fool around with it a bit before I get a true feel for it.
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Old 14th November 2011, 05:58 AM   #2453
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Quote:
Originally Posted by chucky12 View Post
Hi David, I'm not sure if anyone else has mentioned any problems with this but the window for Particle Velocity appears around 2/3 size of the main Hornresp window and unresizable.

The graph and controls are partially obscured and I can't alter the window to properly see the results.

I'm running on XP SP3 at 1920x1080 if that's any help!
Hi Chucky,

Hopefully the problem you have been experiencing has been fixed in the latest Hornresp release. Could you please confirm that everything now displays correctly. Product Number 2880-111114 refers.

Kind regards,

David
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Old 14th November 2011, 08:29 AM   #2454
Jmmlc is offline Jmmlc  France
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Hello, David,


Thank you a lot for that.

Here attached a picture of a Le Cléac'h bass horn ("stand" type) that my friend Didier is currently finishing to build.

(BTW, the white horn is a 200Hz Le Cléac'h horn)

Best regards from Paris, France

Jean-Michel Le Cléac'h



Quote:
Originally Posted by David McBean View Post
Hi Everyone,

The maximum permissible S2 value for a Le Cléac'h horn has been increased to 999999.9 sq cm. This means that a fully-formed 180 degree horn with a cutoff frequency down to 18 hertz can now be simulated (see attached screenprints). Even lower cutoff frequencies can be accommodated if the mouth angle is allowed to be less than 180 degrees - which is probably going to be the case regardless, given that a fully-formed 18Hz horn has a maximum diameter of 10.69 metres :-).

While it is still only possible to simulate horns with a maximum mouth angle of 180 degrees, extending the foldback of a practical horn beyond that limit is unlikely to make any audible difference to the radiated sound anyway. Construction data for a 360 degree axisymmetric Le Cléac'h horn can however be obtained if necessary by exporting the "exact profile" from the schematic diagram window.

My thanks to witasso for prompting the initial discussion on this matter, and to Jean-Michel and Mark for helping me to clarify my thinking, particularly in relation to Le Cléac'h horns.

The latest Hornresp release is Version 28.80.

Could you please let me know if you find any bugs.

Kind regards,

David
Attached Images
File Type: jpg stand_horn_Didier.jpg (57.0 KB, 463 views)

Last edited by Jmmlc; 14th November 2011 at 08:35 AM.
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Old 15th November 2011, 04:51 AM   #2455
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Quote:
Originally Posted by Jmmlc View Post
Here attached a picture of a Le Cléac'h bass horn ("stand" type) that my friend Didier is currently finishing to build.
(BTW, the white horn is a 200Hz Le Cléac'h horn)
Hi Jean-Michel,

Thanks for posting the picture - an impressive system indeed.

Your "stand" type configuration is a very elegant way of minimising the overall visual impact of the bass horn.

Kind regards,

David
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Old 16th November 2011, 08:25 AM   #2456
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Hi David,

Please disregard the email I sent you, I hadn't seen your reply to this post yet!

The problem has been fixed and everything now displays correctly. Many thanks!!

Chucky
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Old 16th November 2011, 06:42 PM   #2457
AndrewT is offline AndrewT  Scotland
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I am running in a set of drivers ready for T/S measurements.
What should I measure to get the best or easiest entry for Hornresp?
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Old 17th November 2011, 05:23 AM   #2458
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Quote:
Originally Posted by chucky12 View Post
Hi David,

Please disregard the email I sent you, I hadn't seen your reply to this post yet!

The problem has been fixed and everything now displays correctly. Many thanks!!

Chucky
Hi Chucky,

So far so good - what happens though, when you calculate the results for default record number 1, and then select Tools > Impulse > Spectrogram from the SPL Response window? Do you get a fatal error, by any chance? The correct result should look like the attachment below.

Kind regards,

David
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File Type: png Test.png (59.3 KB, 182 views)
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Old 17th November 2011, 06:31 AM   #2459
NEO Dan is offline NEO Dan  United States
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Quote:
Originally Posted by AndrewT View Post
I am running in a set of drivers ready for T/S measurements.
What should I measure to get the best or easiest entry for Hornresp?
Attached Images
File Type: png window-grab.png (24.9 KB, 175 views)
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Old 17th November 2011, 09:29 AM   #2460
AndrewT is offline AndrewT  Scotland
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Thanks Neo.

Just to confirm I am reading the input page correctly.
I need
Sd, Vas, Fs, Re, Qes, Qms Le. 7parameters.

When I measure T/S I use added weight to derive Vas. Is that accurate enough?
I do not measure Le.
Any suggestions that give a good enough result for input to Hornresp?
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