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Old 26th January 2013, 09:07 PM   #3131
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Rad wizard made/allowed another invalid horn.
hresp_err1.PNG

On another note, Rad horns seems to be able to make a very non inductive horn while loading the driver down low before dropping like a rock.
And it seems to have a good dispersion pattern, at least depending on what you want.
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Old 26th January 2013, 09:46 PM   #3132
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And what appears to be a rounding error.
hresp_err2.PNG
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Old 27th January 2013, 05:38 AM   #3133
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Quote:
Originally Posted by more10 View Post
Click the image to open in full size.

When hitting

Click the image to open in full size.
Hi more10,

Despite trying everything that I can think of, I have not been able to reproduce the error you saw.

Are you able to generate the error message again? If so, could you please post details of the specific sequence of actions that causes the message to be displayed. Thanks.

Kind regards,

David
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Old 27th January 2013, 05:42 AM   #3134
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Originally Posted by tb46 View Post
All looks good so far.
Thanks Oliver, I am keeping my fingers crossed :-).

Kind regards,

David
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Old 27th January 2013, 06:01 AM   #3135
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Quote:
Originally Posted by David_Web View Post
Rad wizard made/allowed another invalid horn.
Hi David_Web,

Strictly speaking the radius horn as specified in your example is a valid design. It's just that when the axial length is less than one-eighth of the cutoff frequency wavelength, the radius horn is not really acting effectively, which is why Hornresp displays the warning message on the main input screen and prevents results from being calculated. This same limitation is applied to Le ClÚac'h, tractrix, and spherical wave horns.

Kind regards,

David
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Old 27th January 2013, 06:17 AM   #3136
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Quote:
Originally Posted by David_Web View Post
And what appears to be a rounding error.
Hi David_Web,

The result you are seeing is indeed due to the Horn Segment Wizard parameter values being rounded to two decimal places. When the wizard calculates values for anything other than the main input window default configuration, there is always the chance that a subtle change will have to be made to one of those values when "transformed" back to the main screen. This applies to several of the horn types - not just radius horns.

Kind regards,

David
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Old 27th January 2013, 09:49 PM   #3137
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Quote:
Originally Posted by David McBean View Post
Hi David_Web,

The result you are seeing is indeed due to the Horn Segment Wizard parameter values being rounded to two decimal places. When the wizard calculates values for anything other than the main input window default configuration, there is always the chance that a subtle change will have to be made to one of those values when "transformed" back to the main screen. This applies to several of the horn types - not just radius horns.

Kind regards,

David
Small changes in BR Fb (like one Hz) also occur between the wizard and the main screen, I'd guess the wizard using only two decimal places would account for that too.
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Old 28th January 2013, 05:26 AM   #3138
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Originally Posted by weltersys View Post
Small changes in BR Fb (like one Hz) also occur between the wizard and the main screen, I'd guess the wizard using only two decimal places would account for that too.
Hi Art,

I assume you are referring to the Loudspeaker Wizard, rather than the Horn Segment Wizard? If so, then this raises a slightly different issue to the one discussed above.

I am not sure why there should be any change to the Helmholtz resonance frequency when Loudspeaker Wizard values are saved back to the main input screen. The slider values in the wizard are to two decimal places, but so are those on the main screen, so the input values used to calculate the Helmholtz frequency should remain the same.

Would it be possible for you to provide screenprints of all the wizard slider settings for an example where the Helmholtz frequency changes when the values are saved back to the main screen? I can then go looking for the reason for the change. Many thanks.

Kind regards,

David
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Old 30th January 2013, 06:01 AM   #3139
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Default Hornresp Update 3100-130130

Hi Everyone,

I forgot to include the radius horn "Rad" option in the Find Record filter list. This oversight has now been corrected.

Kind regards,

David
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File Type: png RadFind.png (51.3 KB, 88 views)
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Old 30th January 2013, 07:40 PM   #3140
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I don't know what that means Click the image to open in full size. but... Thanks David!!
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