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Old 02-23-2014, 10:10 PM
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Default enclosure help ??

I've ran some #s through a box calculator and got conflicting results. So, I tried the old school way. Can someone help check my figures?
Enclosure is 48w x 20d x 28h (includes double baffle). Port is 7.5h x 18.5w x 20d.
Thanks for any help
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Old 02-23-2014, 10:16 PM
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im getting 11.27cf tuned to 33
minus sub displacement
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2 sa Zv1's 5.8cf tuned to 48 or 32 with port plugs
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Old 02-23-2014, 10:42 PM
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The way I figured was
46.5w x 18.5d x 25.75 =(12.81cuft)
Port volume I did
8.25h x 18.5w x 20d =(1.76cuft)

12.81-1.76= 11.05 cuft

11.5 - .42(subs) - .4(bracing) = 10.23 cuft @ 34.5hz

I appreciate your help. I am trying to figure out the most accurate way of doing it. I did use a port length calculator but...
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Old 02-23-2014, 10:44 PM
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The enclosure is for 3 sundown zv3 15s on 2 crescendo 3500s strapped @ 1.3
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Old 02-23-2014, 11:04 PM
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gross volume 13.19 cubes

port volume 1.93 cubes

subs displacement say .75 cubes

port area 138.75 in2

port area per foot 13.91in2

NET volume 10 cubes @ 35.5HZ
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Last edited by markc32; 02-23-2014 at 11:08 PM.
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Old 02-23-2014, 11:06 PM
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slot port tune is say your total length of port wall is 12 inches then you have to add .5" for total tune.

so total port length is 20.5" but physically its 20 inches only from face to end of wall.

its an invinsible .5" you add.
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Old 02-23-2014, 11:08 PM
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Thanks for your help. Could you share how you came up with those #s? I am trying to see what I am doing right or wrong.

The subs face up and port is on side at bottom
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Old 02-24-2014, 12:07 AM
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12volt sub box calc

torres box calc
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