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Old 5th September 2012, 03:04 PM   #2791
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Quote:
Originally Posted by NEO Dan View Post
That'll do, but if you are going to have the horn on the floor you can use a flat bottom.
Happy SketchUping
Cool, I suppose as long as the expansion is kept the same, it won't affect the response much, especially with a bass-horn.
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Old 5th September 2012, 03:41 PM   #2792
NEO Dan is offline NEO Dan  United States
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You could think of the floor as a mirror of your horn. And speaking of response; depending on what your "requirements" are you might want to have a look at the off axis response. From the SPL screen do a [ctrl]+r.
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Old 6th September 2012, 08:10 AM   #2793
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Originally Posted by Twellmann View Post
Am I doing this correctly?
I'm guessing the increments are on the axis going through the center of the horn?!
Hi Daniel,

You are correct in your thinking.

Starting with S1 = 49, S2 = 2500 and L12(Exp) = 60 , I get a slightly different result to yours, but nothing to worry about.

Length...Height...Width

0...........70........70
100........67.......142
200........85.......213
300........123.....285
400........189.....357
500........303.....428
600........500.....500

Kind regards,

David
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Old 6th September 2012, 08:21 AM   #2794
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Originally Posted by Etocynned View Post
David,

I appreciate all your hard work in this product.

Obviously your an audio/computer nut!

Keep it going.

Since you give it away what would be an apropriate donation?
Hi Etocynned,

Thanks for the feedback - knowing that Hornresp is proving to be useful and that my efforts are valued, is all the reward I need :-).

Kind regards,

David
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Old 16th September 2012, 05:23 AM   #2795
jaya000 is offline jaya000  India
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I want to use this cabinet to match speaker i have.
I want guidance for hornresp input.

I have done but i think i need some guidance specially for ATC.
Please tell me if my hornresp inputs are correct or not?
So i need master's( David McBean) guidance if possible.
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File Type: png WBIN MHB4818.png (28.3 KB, 116 views)
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Old 16th September 2012, 05:28 AM   #2796
NEO Dan is offline NEO Dan  United States
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ATC looks good, but VTC appears to have an error... VTC should represent the volume of the cone and the cutout in the baffle, looks like an extra 0 in there.
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Old 16th September 2012, 07:13 AM   #2797
jaya000 is offline jaya000  India
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Thanks Dan,

I calculated the area marked as Vtc.

The calculation is as under

42.07 width till horn starts
10.6 height
57.4 depth of the box.

so it calculated as 42.07 x 10.6 x 57.4 = 25597 + added speaker volume 4403.
So i rounded as 30000.
The triangle volume i adjusted towards round cutout of plywood .

Pl. correct me.
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Old 16th September 2012, 07:23 AM   #2798
NEO Dan is offline NEO Dan  United States
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Probably best to define it as a segment to enable Hornresp to more accurately do it's job IMO
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Old 16th September 2012, 07:54 AM   #2799
NEO Dan is offline NEO Dan  United States
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The throat chamber is a segment that calculates it's length via the ATC and volume you provide, but as I stated above a more accurately defined model is...
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Old 16th September 2012, 09:53 AM   #2800
jaya000 is offline jaya000  India
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Originally Posted by NEO Dan View Post
Probably best to define it as a segment to enable Hornresp to more accurately do it's job IMO
Thanks Dan.
Can u explain in details where is my mistake?
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