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Old 4th April 2010, 04:19 AM   #1021
brsanko is offline brsanko  United States
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Nope no formulas necessary. To enter L12 just click on it till it says Con or Exp then enter the length. As far as the other specs go, just double click on them and it will ask for the information you need.
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Old 4th April 2010, 04:30 AM   #1022
brsanko is offline brsanko  United States
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Sd is the area of the cone. Find the radius(NOT INCLUDING FRAME AND SURROUND) and calculate pi*R/\2
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Old 4th April 2010, 05:23 AM   #1023
NEO Dan is offline NEO Dan  United States
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Quote:
Originally Posted by johnr66 View Post
Just downloaded and trying out. I entered all my S values, but it says error L12=0 and will not let me change any L value.

Also, I need to understand how to enter driver parameters.

Specifications: *Power handling: 200 watts RMS/400 watts continuous program *VCdia: 2" *Le: 0.8 mH *Impedance: 8 ohms *Re: 5.1 ohms *Frequency response: 70-4,000 Hz *Fs: 70 Hz *SPL: 97 dB 1W/1m *Vas: 0.6 cu. ft. *Qms: 3.7 *Qes: 0.21 *Qts: 0.20 *Xmax: 6 mm *Dimensions: Overall diameter 8.8", Cutout diameter 7.4", Depth 3.7".

HR needs Sd, Cms, Mmd, Bl, Rms, Nd
Only Re and Le given in above. I guess I need formulas for figuring what HR needs?

Thanks

What driver is it ?
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Old 4th April 2010, 07:08 AM   #1024
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Quote:
Also, I need to understand how to enter driver parameters.
Guide to WinISD Pro and Hornresp - Speakerplans.com Forums - Page 1

Best regards Johan
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Old 4th April 2010, 03:26 PM   #1025
johnr66 is offline johnr66  United States
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Quote:
Originally Posted by NEO Dan View Post
What driver is it ?
Parts-Express.com:B&C 8MDN51 8" Neodymium Woofer | B&C 8MDN51 8" Neodymium Woofer midrange midbass line array 2-way horn loaded pa system

I figured out how to get the driver parameters entered. I found I have some problems with my box measurements I need to fix.

I'm not sure on the type of horn I have (Conical, Exp...)

Click the image to open in full size.
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Old 4th April 2010, 07:46 PM   #1026
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Based on your drawing, it's a conical tapped horn.
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Old 4th April 2010, 08:03 PM   #1027
johnr66 is offline johnr66  United States
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Okay, I fixed the errors and performed a run. Here is what I get:
Click the image to open in full size.

Drawing of how I measured:
http://www.jracrylic.com/cpf/thsm3.jpg

Let me know if this looks right. I do see the driver is not a perfect match, but doesn't seem too bad. I used same driver in previous post.

Thanks

Last edited by johnr66; 4th April 2010 at 08:10 PM.
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Old 4th April 2010, 08:30 PM   #1028
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Correct Vtc to the thickness of wood and Atc to Sd or speaker cut out diameter.
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Old 7th April 2010, 07:15 AM   #1029
djn is offline djn  United States
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Hi All, I just started using HornResp....Great program David. I am designing 100hz Tractrix horns to match the 250hz tractrix midrange I just build. For that one, I just drew the right sized curve and made the horns. Amazingly, it worked. This time, I am going to use a cone driver instead of the TAD CD so I thought I'd try my hand at modeling it first. SO, is there a tutorial for HornResp? Once I get it figured out, I'll post results. I am hoping to have these built in the next 3 weeks.
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Old 7th April 2010, 10:00 AM   #1030
djn is offline djn  United States
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Never mind. I just saw Johan's link above. I went 7/8ths of the way through all the post then gave up, just to find what I was looking for at the end. Cheers.
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