Hornresp

[David McBean]

Originally posted by Volvotreter
With some older version I also tried before, but that time Hornresp always created a c:\hornresp directory.

Hi Erik,

Just to explain :-).

Originally it was necessary for Hornresp to be installed on the C: drive - the Hornresp.dat data file was automatically saved to the C:\Hornresp folder. This condition was relaxed with the release of Version 7.20.

Hornresp can now be installed on any drive - the Hornresp.dat data file is automatically saved to the [Drive Letter]:\Hornresp folder.

Controlling where the Hornresp.dat data file is stored makes it easier for me to provide support to users who may be experiencing operational problems.

Kind regards,

David

[Volvotreter]

David,
thanks, the world is now ok again .

regards.

Erik

[Kolbrek]

Originally posted by Volvotreter
Of course it's possible to use
HornRespMerge.exe in order to copy records from one dat file to
another but this is time consuming if your dat file contains more
than 100 records.

HornrespMerge is now updated (version 1.4), so that more than one record can be selected to be moved or deleted at the same time. Go to
http://www.geocities.com/la1zka/ under SW and Tools to download the latest version.

Glad to see that someone are using my little program

Bjørn

[jaya000]

i hv uploaded a staiper design fully modified.
I want to do the simulation.
kindly suggest what i am missing.

learning hornresp with staiper design

The post :

Learning hornresp with staiper design

I hv modified staiper design to learn about hornresp.
Herewith attached the my drawing file.
http://img3.imageshack.us/my.php?im...aiperdesign.pdf

I hv also included the horn design values as understood.
I want to know which more parameter (excluding driver parameter) will be required to simulate.
How to get them?

[MaVo]

Hi David,

which Ang value should i use to simulate the response of a horn directly at its mouth? I would guess 0,5 PI, since the waves passing through at this point have not yet been influenced by the adjacent boundaries. Do you have an idea where the transition midpoint is?

Thanks

[iand]

Originally posted by MaVo
Hi David,

which Ang value should i use to simulate the response of a horn directly at its mouth? I would guess 0,5 PI, since the waves passing through at this point have not yet been influenced by the adjacent boundaries. Do you have an idea where the transition midpoint is?

Thanks

Since the acoustic impedance looking into the room affects the horn response (including electrical impedance, and acoustic impedance at the throat) surely you have to use the real solid angle seen by the speaker?

The response at the mouth will be the same shape (but louder) as that measured in the near field or outdoors.

The "mouth bubble" effect that was being talked about in another thread is just really the near field (speaker dominates) to far field (room dominates) transition, there's nothing new about this.

Ian

[David McBean]

Originally posted by MaVo
Which Ang value should i use to simulate the response of a horn directly at its mouth?

Hi MaVo,

Ian's reply covers it pretty well :-).

As far as Hornresp is concerned, the overall shape of the SPL response curve will remain the same regardless of the distance from the horn mouth to the nominal measuring point. Only the absolute level will change.

You might be interested to know that the very first release of Hornresp actually calculated the response at the horn mouth, rather than at the 1 metre reference point.

Kind regards,

David

[aznboi3644]

Has anyone made a tapped horn that had S1>S3??

seems like I can't get a decently flat response without having a negative taper to the terminus

[MaVo]

Thanks, David & iand.

[bjorno]

…Has anyone made a tapped horn that had S1>S3??…seems like I can't get a decently flat response without having a negative taper to the terminus…

Hi aznboi3644

See the pictures 1x(10x) to 10x(10x) here:

http://www.diyaudio.com/forums/showt...57#post1658457

…Continuing with more pictures: 11x(6) to 16x(6) showing the 'tapped -TQWT' for 2xAudax 75W87-4 attached here:

b

11x(6)