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Old 7th February 2012, 06:26 AM   #2551
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Quote:
Originally Posted by bjorno View Post
They will change too in a IMO weird way as BL Rms and Mmd will be UN-recognizable if doing a real world measurement.
Hi bjorno,

I am not sure how to interpret the results you have posted :-).

To establish a starting point reference - what are the theoretical parameter values for a single Audiobahn AW1251SE driver?

Thanks.

Kind regards,

David
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Old 7th February 2012, 06:31 AM   #2552
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Quote:
Originally Posted by tb46 View Post
I'll just stay with my old method of calculating the values for an isobaric pair, and treating it like a single driver in Hornresp.
Hi Oliver,

I would be very interested to know what method you use to calculate the single driver equivalent parameter values for an isobaric pair. Thanks.

Kind regards,

David
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Old 7th February 2012, 06:47 AM   #2553
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Quote:
Originally Posted by jamikl View Post
I got back online on Saturday and find I am unable to connect to David McBean's new link.
Hi jamikl,

The current Hornresp link is Hornresp. The webpage is very kindly hosted by Sabbelbacke in Germany.

I have noticed that file download times have been significantly slower over the past week or so, but I don’t know the reason why.

Do you have a dial-up or a broadband Internet connection?

Kind regards,

David
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Old 7th February 2012, 07:05 AM   #2554
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Quote:
Originally Posted by Jmmlc View Post
Seems OK to me too.
Still the problem of the inverted phase on the phase graph ... (wrap around + and -180° and not around 0°).
Thanks Jean-Michel.

I have no idea why my reply to mimura was posted twice, 28 minutes apart :-).

I get the phase response shown below - isn't this correct?

It seems to be wrapped around 0 degrees okay.

Kind regards,

David
Attached Images
File Type: png Phase.png (28.3 KB, 142 views)
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Old 7th February 2012, 07:35 AM   #2555
Jmmlc is offline Jmmlc  France
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Hello David,

Your phase graph is correct.

Here is the one I obtained with the new version of Hornresp downloaded few minutes ago.

Attached is the Hornresp record mimura.txt I used.

Best regards from Paris, France

Jean-Michel Le Cléac'h


Quote:
Originally Posted by David McBean View Post
Thanks Jean-Michel.

I have no idea why my reply to mimura was posted twice, 28 minutes apart :-).

I get the phase response shown below - isn't this correct?

It seems to be wrapped around 0 degrees okay.

Kind regards,

David
Attached Images
File Type: gif phase_mimura.gif (66.9 KB, 138 views)
Attached Files
File Type: txt mimura.txt (419 Bytes, 3 views)
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Old 7th February 2012, 08:44 AM   #2556
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Quote:
Originally Posted by Jmmlc View Post
Here is the one I obtained with the new version of Hornresp downloaded few minutes ago.
Hi Jean-Michel,

The reason for the difference in our results is that you are using the 'unmasked resonances' option and I am using the 'masked resonances' option.

I am not sure why this should have such an effect on the phase wrapping process - I need to investigate further :-).

Kind regards,

David
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Old 7th February 2012, 08:47 AM   #2557
jamikl is offline jamikl  Australia
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Location: Melbourne
Hi David, I'm using ADSL2+. If I wait long enough I get the "Web page is not Available"message. I've been trying for three days now - same result each time. I never had any problems two and a half months ago on the same computer. Don't know what is wrong now.
jamikl
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Old 7th February 2012, 12:21 PM   #2558
mimura is offline mimura  Thailand
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Quote:
Originally Posted by Jmmlc View Post
Hello David,

Your phase graph is correct.

Here is the one I obtained with the new version of Hornresp downloaded few minutes ago.

Attached is the Hornresp record mimura.txt I used.

Best regards from Paris, France

Jean-Michel Le Cléac'h
Hello David and all the members.
Thanks for the help. I do not know if it will affect projects that are going to do it. I do not know much about such details.

Thank you for good.
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Old 7th February 2012, 01:53 PM   #2559
tb46 is offline tb46  United States
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Location: Texas
Default Post #2554 - Isobaric Driver Configuration

Hi David,

I'll attach a screen print of some notes in a spreadsheet. Using these values seems to work well enough. Please, let me know if you find any big mistakes.

Regards,
Attached Images
File Type: jpg Isobaric_spreadsheet.jpg (57.6 KB, 125 views)
File Type: jpg Isobaric_drivers.jpg (69.2 KB, 124 views)
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Last edited by tb46; 7th February 2012 at 01:57 PM.
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Old 7th February 2012, 02:48 PM   #2560
bjorno is offline bjorno  Sweden
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Quote:
Originally Posted by David McBean View Post
Hi bjorno,

I am not sure how to interpret the results you have posted :-).

To establish a starting point reference - what are the theoretical parameter values for a single Audiobahn AW1251SE driver?

Thanks.

Kind regards,

David
Hi David,

A starting point reference is single coil DVC TS parameters that can be found here: The submitted picture

b
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