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Old 01-29-12, 04:22 AM   #1
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LAB 12 Ported Help


Box : 7.769 cu. ft / 220l
Tuning : 20.7Hz
2 Vents |Diameter 100mm| Lenght 400mm|
Running out of xmax @ 19Hz

Is this a good box for lab 12?
Is everything right?
What to change to get better result.

Some pictures

http://www.upload.ee/image/2026404/SPL_300w.jpg
Thats SPL @ 300w

http://www.upload.ee/image/2026409/Cone_movement.jpg
Cone Displacement @ 300W

http://www.upload.ee/image/2026411/V...r_Velocity.jpg
Vent Air @ 300W


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Old 01-29-12, 05:44 AM   #2
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Re: LAB 12 Ported Help


Can you provide a link to the parameters you used? My modeling gets completely different results from yours.


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Old 01-29-12, 06:14 AM   #3
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Re: LAB 12 Ported Help


Parameters from here: http://www.eminence.com/pdf/LAB_12.pdf
And parameters i entered in bassbox pro6 http://www.upload.ee/image/2026793/Parameters.jpg


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Old 01-29-12, 10:43 AM   #4
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Re: LAB 12 Ported Help


Ive just inputted those parameters and am getting a different result. I have attached my winisd file. On mine xmax is on it's limit with 200 watts input power based on a 220l box. I also have a tuning off 21.25hz.

I didn't get any errors in winisd so I am guessing my file is ok.

cheers

Graham

Attached Files
File Type: wpr LAB12.wpr (1.6 KB, 38 views)

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Old 01-29-12, 01:54 PM   #5
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Re: LAB 12 Ported Help


My WinISD file is the same as Grahams.


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Old 01-29-12, 04:53 PM   #6
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Re: LAB 12 Ported Help


Bassbox pro is not right then? It's time to use winISD?


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Old 01-29-12, 08:21 PM   #7
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Re: LAB 12 Ported Help


I really can't say which one is more accurate.


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Old 01-30-12, 01:50 AM   #8
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300 watts input power would take it quite a bit over xmax on my model. And the spl on mine is quite a bit less too.


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