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Old 03-14-2012, 09:29 PM
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Default Box with 1 18 and 4-4" aeros

So I got bored in my engineering class and drew up a new box.
I used psp calc and just wanted to make sure that I am doing it right.
The box is 6.5 cubes after woofer displacement, so that is the number i put into the calc? Just checking if I have to account for port displacement or if psp does it automatically.

Box is 6.5 cubes @ 33.2hz according to psp
EDIT: 4 17" flared aero's

Whole box is 1.5" face has another flush mount layer. Just love the look of flush mount subs.
and I threw in a .5" thick plexi viewport cause why not.

Just let me know if I used the calc right/ if you have any suggestions.




Last edited by btsteinb; 03-14-2012 at 09:39 PM.
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Old 03-14-2012, 09:38 PM
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I was also wondering If the precision port calc took displacement into account. Box looks really nice.
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But thanks for chiming in. Your opinion is duly noted.
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Old 03-14-2012, 09:40 PM
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Originally Posted by Matt3824 View Post
I was also wondering If the precision port calc took displacement into account. Box looks really nice.
yea it helps when your school give you a couple hundred dollar drawing software for free... sketchup just isn't for me.
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Old 03-15-2012, 12:07 PM
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Brian,

The calculator does not subtract for port displacement. It only calculates the port length based on the volume you provide.

Thank You,
Steve

I emailed psp just thought I would post for all to know.
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Old 03-15-2012, 12:22 PM
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yea i see that 1/2" plexi being the #1 weak spot in the whole design
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Old 03-15-2012, 12:37 PM
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Originally Posted by Mr.G6 View Post
yea i see that 1/2" plexi being the #1 weak spot in the whole design
Yea I know but neo motors look so pretty, it would be a shame to hide it in a cold dark box.
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