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Old 16th April 2008, 08:13 AM   #51
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Quote:
Originally posted by Paul W


David,
Would you say a bit more about this? I'd like to understand the root cause a little better.
Thanks,
Paul
Hi Paul,

The following references may be of some help - they cover in reasonable detail the key factors that influence the directional properties of horns.

* 'Acoustical Engineering' by Harry F Olson
* 'Acoustics' by Leo L Beranek

Kind regards,

David
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Old 16th April 2008, 08:17 AM   #52
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Thanks Brett, MaVo, Sabbelbacke and MikeHunt79 :-).

Kind regards,

David
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Old 16th April 2008, 08:32 AM   #53
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Hi David,
How do I simulate a horn with a compression driver, in my case JBL 2441 ? Have checked your help and googled but haven´t found anything.
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Old 17th April 2008, 06:54 AM   #54
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Quote:
Originally posted by revintage
Hi David,
How do I simulate a horn with a compression driver, in my case JBL 2441?
Hi Lars,

Just the same as for any other driver :-). One problem could be finding the driver parameter values, as they are not normally released by the manufacturer. It will also be necessary to determine the throat chamber size, which is in the compression driver itself.

Contrary to popular belief, Hornresp models the power response of compression-driven midrange horns quite accurately, provided that the input parameter values are correct.

Kind regards,

David
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Old 17th April 2008, 07:12 AM   #55
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Thought it would be so. Just found an AES-paper with hopefully complete data for a JBL 375. But as you say, the parameters seems hard to find.
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Old 18th April 2008, 01:15 AM   #56
tb46 is offline tb46  United States
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Default Error in Version 19.00

Hi David,

I had a problem in Version 19.00-08041: after adding a speaker the program created an additional entry "002" that gave a "Subscript out of range" error everytime I tried to open it, and when clicking OK in the error window Hornresp shut down.

I could not remove this entry in version 19, but was able to get rid of it by going back to version 18.30 which opened the empty entry, and allowed me to delete it. After reinstalling version 19.00 all seems fine.

Just thought you should know, thanks for Version 19.
Regards,
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Old 18th April 2008, 08:09 AM   #57
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Default Re: Error in Version 19.00

Quote:
Originally posted by tb46
Hi David,

I had a problem in Version 19.00-080414: after adding a speaker the program created an additional entry "002" that gave a "Subscript out of range" error everytime I tried to open it, and when clicking OK in the error window Hornresp shut down.

I could not remove this entry in version 19, but was able to get rid of it by going back to version 18.30 which opened the empty entry, and allowed me to delete it. After reinstalling version 19.00 all seems fine.

Just thought you should know, thanks for Version 19.
Regards,
Hi Oliver,

Many thanks for the feedback. I suspect that you may have had two copies of Hornresp running at the same time, at some stage :-). Editing, adding or deleting records using one copy of Hornresp while another one is also open, will generate the problem you have experienced. Could you please let me know if you had two copies of Hornresp running, sharing a common data file.

In any event, it is strongly recommended that only one copy of Hornresp be run at a time, and as mentioned in a previous post, under no circumstances should an earlier version of the program be used after the data file has been opened by a more recent version.

Incidentally I have just released a minor upgrade which fixes two subtle user interface bugs that I found yesterday. Product Number 1900-080418 refers.

Thanks again for the excellent feedback.

Kind regards,

David
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Old 18th April 2008, 01:21 PM   #58
tb46 is offline tb46  United States
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Default Re: Error in Version 19.00

Hi David,

You are correct, I have had two copies of Hornresp running at the same time before. It is interesting, that I have not experienced any problems like this earlier. I quite frequently have had one window open to see e.g.: the input parameters or the SPL curve while working in another. Well, got to stop doing that, it's easy enough to work around.

I have been amazed how forgiving your software is in comparison to many others out there. Thanks for the steady stream of updates.

Regards,
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Old 19th April 2008, 07:16 AM   #59
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Default Re: Re: Error in Version 19.00

Quote:
Originally posted by tb46
Hi David,

You are correct, I have had two copies of Hornresp running at the same time before.
Hi Oliver,

Many thanks for the confirmation. I have now included a cautionary note in the Readme.txt file supplied as part of the download package, warning users not to edit, add or delete records while running multiple copies of Hornresp.

Please note that it is quite okay to run multiple copies, provided that they all have the same version number. The important thing is not to edit, add or delete any records while the multiple copies are running.

Thanks again for the very useful feedback.

Kind regards,

David
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Old 19th April 2008, 03:26 PM   #60
tb46 is offline tb46  United States
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Default Multiple copies runnig.

Quote:
...The important thing is not to edit, add or delete any records while the multiple copies are running.
Got it.

Thanks David.
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