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Old 10th December 2019, 07:47 AM   #10281
David McBean is offline David McBean  Australia
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Quote:
Originally Posted by LORDSANSUI View Post
Maybe, it could be integrated in someway to Hornresp
Hi Marcelo,

I am not exactly sure what it is that you have in mind could be integrated.

Kind regards,

David
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Old 10th December 2019, 08:16 AM   #10282
David McBean is offline David McBean  Australia
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Default Hornresp Update 5050-191210

Hi Everyone,

BUG FIX

The problem reported by Damien in Post #10264 has now been fixed.

Kind regards,

David
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Last edited by David McBean; 10th December 2019 at 08:23 AM.
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Old 10th December 2019, 08:32 AM   #10283
David McBean is offline David McBean  Australia
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Quote:
Originally Posted by papasteack View Post
You should have written this on a card
No time for writing on cards - I'm kept fully occupied fixing all the bugs you keep finding... :-).
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Old 10th December 2019, 09:27 AM   #10284
Andypk is offline Andypk
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Quote:
Originally Posted by David McBean View Post
Hi Andypk,


The height dimensions of your constructed horn should be two times the Height/2 values, and the width dimension two times the Width/2 value. Your "as constructed" internal width of 42 cm is correct, but unfortunately it would seem that the height values (and therefore the overall cross-sectional areas) are half what they should be, making the overall horn cabinet smaller than the size required for the given design.


David
So the horn needs to be mirrored in the Y-axis

or..

height x 2 to keep the X-axis straight line. Thank you!
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Old 10th December 2019, 09:37 AM   #10285
papasteack is offline papasteack  France
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Location: Limousin
Quote:
Originally Posted by David McBean View Post
Hi Everyone,

BUG FIX

The problem reported by Damien in Post #10264 has now been fixed.

Kind regards,

David
THANK YOU DAVID !

Stuffing seems to works soooo well for mid ports that i won't even try to experiment with port shape/orientation. Mid power capabilites not beeing a issue, efficiency loose from stuffing for mid is a compromise that i can accept really easily in exchange of reduced resonnances. And it add high pass effect on mid, that freely somewhat protect from over excursion. Awesome.
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Old 11th December 2019, 12:08 AM   #10286
LORDSANSUI is offline LORDSANSUI  Brazil
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Quote:
Originally Posted by David McBean View Post
I am not exactly sure what it is that you have in mind could be integrated.
I thought about something simple and useful like add "reference line" at port outlet particle velocity chart that may help user to evaluate the design regarding potential noise.

See the example below. You could also add tooltips in some cases to guide users.
Attached Images
File Type: png Port noise.png (43.0 KB, 103 views)
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Old 11th December 2019, 12:21 AM   #10287
Brian Steele is offline Brian Steele  Grenada
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Another way to do it would be to change the color of the graph line to red when the velocity gets too high. Or change the background of the graph to light red to designate that particular area where particle velocity can be an issue if the graph line extends into that area.
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Old 11th December 2019, 06:41 AM   #10288
David McBean is offline David McBean  Australia
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Quote:
Originally Posted by LORDSANSUI View Post
I thought about something simple and useful like add "reference line" at port outlet particle velocity chart that may help user to evaluate the design regarding potential noise.
Thanks for the clarification.

If someone can provide me with the equation to use to plot the limiting "reference line" particle velocity for a single, circular, unflared port tube, as a function of frequency and port diameter, then I can certainly have a look at doing something with it.
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Old 11th December 2019, 06:52 AM   #10289
papasteack is offline papasteack  France
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Quote:
Originally Posted by David McBean View Post
Thanks for the clarification.

If someone can provide me with the equation to use to plot the limiting "reference line" particle velocity for a single, circular, unflared port tube, as a function of frequency and port diameter, then I can certainly have a look at doing something with it.
User Collo did the flare it tool if I'm not wrong. It's in VB6 ^^. Maybe should he give you all you need. I use hornresp with Flare-it tool as guideline for port sizing.
If I'm not wrong he still come and recently wrote on diyaudio.

Last edited by papasteack; 11th December 2019 at 07:06 AM.
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Old 11th December 2019, 12:28 PM   #10290
David McBean is offline David McBean  Australia
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Quote:
Originally Posted by papasteack View Post
User Collo did the flare it tool if I'm not wrong.
Flare-it appears to be limited to spot frequencies of 20Hz, 25Hz, 30Hz and 35Hz. Hornresp would require frequencies from 10Hz to 20kHz.
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