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Old 5th October 2009, 09:12 PM   #771
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Quote:
Originally Posted by David_Web View Post
So there is a workaround? Sweet, that always bugged me about AkAbak.
It still won't do straight segments right? Could probably be replaced with ducts then. Or a very small taper.
Lots of IF and AND statements I guess :-)
The famously impenetrable AkAbak manual describes how to do decreasing section waveguides. First two paragraphs, top of page 194, in the description of the Waveguide component.

As you say, waveguides with throat size = mouth size have to be represented by ducts.
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Old 6th October 2009, 09:27 AM   #772
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Originally Posted by David McBean View Post
I am pretty busy at the moment, so it may take a few days, but I will let everyone know once it is done.
Hi Don,

I have just discovered that AkAbak predicts results different to those calculated by Hornresp for negative flare horns. I need to investigate further. It seems that it may now take me more than "a few days", before I can release anything :-).

Kind regards,

David
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Old 7th October 2009, 08:27 AM   #773
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Default Hornresp Update

Hi Don / Everyone,

Just letting you know that Hornresp now exports AkAbak scripts for both positive and negative flare horn segments. Product Number 2320-091007 refers. Hornresp and AkAbak predictions are identical.

Kind regards,

David
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Last edited by David McBean; 7th October 2009 at 08:30 AM.
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Old 7th October 2009, 01:12 PM   #774
Henkjan is offline Henkjan  Netherlands
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Quote:
Originally Posted by Don Hills View Post
The famously impenetrable AkAbak manual describes how to do decreasing section waveguides. First two paragraphs, top of page 194, in the description of the Waveguide component.
Quote:
Originally Posted by David McBean View Post
Just letting you know that Hornresp now exports AkAbak scripts for both positive and negative flare horn segments. Product Number 2320-091007 refers. Hornresp and AkAbak predictions are identical.
now there's some good help AND some good news on 1 page! thanks lads
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Old 7th October 2009, 01:15 PM   #775
Mark Kravchenko --- www.kravchenko-audio.com
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Default Thumbs up!

Thanks David!

This makes working in AkaBak so much easier. I just did an export of my funny bowtie horns and it works perfectly. It also simulates fairly similarly. Not exactly the same. My guess is that being able to excite the horn from different locations with movable driver points is what makes the greatest difference.

Mark
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Old 8th October 2009, 02:01 AM   #776
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Originally Posted by mwmkravchenko View Post
It also simulates fairly similarly. Not exactly the same. My guess is that being able to excite the horn from different locations with movable driver points is what makes the greatest difference.
Hi Mark,

For a single-driver system, the un-combined power response, electrical impedance and diaphragm displacement results should be identical.

The AkAbak pressure response will be different from the Hornresp power response.

Kind regards,

David
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Old 8th October 2009, 02:46 AM   #777
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Originally Posted by David McBean View Post
For a single-driver system, the un-combined power response, electrical impedance and diaphragm displacement results should be identical.
Hi Mark,

I should have perhaps clarified that identical results require that the Hornresp chamber resonances are not masked, and that the AkAbak settings are as detailed in the header to the exported script.

Kind regards,

David
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Old 8th October 2009, 03:18 AM   #778
Mark Kravchenko --- www.kravchenko-audio.com
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Hi David

I'm still in the process of changing over an existing box into a new fold. So I will carefully measure what comes of the changes and report back.

Mark
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Old 14th October 2009, 07:07 AM   #779
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Default Hornresp Version 23.30

Hi Everyone,

Hornresp can now export SPL and Ze data in files suitable for direct importation into loudspeaker design tools such as LEAP, Boxsim, SoundEasy, CrossoverShop, etc.

All calculated results can still also be exported using the standard *.txt or *.csv bulk data files.

Kind regards,

David
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Old 14th October 2009, 05:38 PM   #780
Mark Kravchenko --- www.kravchenko-audio.com
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Now we are getting into some serious capabilities. Muchly appreciated David.

Mark
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