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Old 28th August 2010, 03:39 PM   #1
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Default Need help in TH modelling

I simply can't grasp how HornResp works. I need some help in modeling this driver Dayton SD315-88.

Thanks in advance
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Old 28th August 2010, 05:40 PM   #2
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Simple Tapped Horn Tutorial using Hornresp - AVS Forum

this is where I started
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Old 29th August 2010, 03:54 PM   #3
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Ok, I've finally figured out how HornResp works thanks to the tut above ^^

Here's some screenshots for the Dayton driver

Click the image to open in full size.

Click the image to open in full size.

SD compression ratio is 3.37:1. Is it too high?

Comments please
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Old 29th August 2010, 04:43 PM   #4
tb46 is offline tb46  United States
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Hi,

I always enter it as a four section model, this provides addditional freedom, and makes it easier to make corrections in the model when you start folding it into an actual enclosure. You can get rid of the big dip @ 100Hz by increasing the driver to mouth distance, and eliminate some of the raggedness in the upper frequencies by shortening L12. The Hornresp Wizard is just an incredible tool.

Also, always take a look at the impulse response of your models.

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Old 29th August 2010, 05:00 PM   #5
bjorno is offline bjorno  Sweden
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Ps: double click on the Rms value.

b
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Old 29th August 2010, 10:43 PM   #6
GM is offline GM  United States
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Quote:
Originally Posted by killa12222 View Post
Comments please
To elaborate on bjorno's suggestion, once the driver's specs are inputted, it's always a good plan to double click on the 'Sd' field to get a pop-up listing of its T/S specs to confirm they are at least close. Right now, yours indicate a driver made from 'unobtanium'.

GM
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Old 30th August 2010, 10:26 AM   #7
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improved

Click the image to open in full size.
Click the image to open in full size.

I didn't know that Rms was clickable
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Old 30th August 2010, 05:05 PM   #8
GM is offline GM  United States
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Somewhat! The proof is in the building/measuring, so looking forward to a review.

GM
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Old 30th August 2010, 05:44 PM   #9
tb46 is offline tb46  United States
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Hi killa2222,

The Ang @ 0.5 (solid corner placement) coupled w/ the Eg of 2.83V (1W into 8Ohm) gives an optimistically high output. My suggestion would be Ang @ 2.0 and Eg @ 2.0. You don't need the AP1/Lpt fields unless you use a throat chamber (Vtc/Atc).

Overall this looks quite good.

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Old 31st August 2010, 04:00 PM   #10
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I've got one question, how do you figure out the 3d dimensions of the horn? And, how would i go about folding it?
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