# check my math

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• 10-21-2002
gmc89
check my math
I need to build a 1Cubic Foot Box and these are the dimensions I came up with:

Height - 15
Width - 16
Bottom Depth - 8
Top Depth - 6

Those are for the inside of the box.

That equals up to .97 cubic feet. That's the closest I could get to one with whole numbers
• 10-21-2002
gmc89
come on
Come on guys. I posted this question on the box section but no one ever answers on it.
• 10-22-2002
KelBench400
I came up with 0.97 ft^3 too. Hope that helps.
• 10-22-2002
mrray13
do u need 1^3 ft b4 or after sub displacement? ported or sealed? those dimensions might change with those answers. otherwise your math is right.
• 10-22-2002
ramos
I answered it in the enclosure section :)

P.S. your math is right. But you have to account for the basket displacement. :)
• 10-22-2002
gmc89
lol
you know, after four years of high school math and one year of college math, you'd think that I would think about displacement, lol

dang, how do I figure out the volume of my sub?
• 10-22-2002
ramos
Don't feel bad. I have done worse :D
It's usually called basket displacement , and it's usually listed with the parameters. What kind of sub ? maybe we can help :)
• 10-22-2002
gmc89
infinity
Infinity Kappa 120.3DVC and it's a going to be a sealed box.
• 10-22-2002
ramos
Well sir, shouldn't we feel like a bunch of fools.:D After looking for the basket displacement on infinity's website. The 1cuft sealed enclosure does include basket displacement :eek: oops :D My bad :D

check it out.
http://manuals.harman.com/INF/CAR/Bo...rs/1203dvc.pdf
• 10-22-2002
gmc89
cool
lol woo hoo. I've come to a delima anyways... That sub is so deep that when I put it in a box, it might not fit in my truck. how many inches should I leave between the magnet and the back of the box?
• 10-22-2002
ramos
About 2" more if possible. :)
• 10-22-2002
gmc89
dang
I might, sadly enough have to change subs cause those infinity's are 6.3 inches deep. I don't have a lot of room to give up in my truck.

How thick does the would need to be? I need to cut corners everywhere possible.
• 10-23-2002
mrray13
[QUOTE]Originally posted by ramos
[B]Well sir, shouldn't we feel like a bunch of fools.:D After looking for the basket displacement on infinity's website. The 1cuft sealed enclosure does include basket displacement :eek: oops :D My bad :D

well, what a coink-e-dink uh? that's cool though that it worked out like that. my bad as well!

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How thick does the would need to be?
for sides and back, i'd say 3/8" minimum, front 1/2". but u should use 1/2" all the way around if ya can.

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not to step on ramos's toes, i've only got about 3/4" behind mine and they've done just fine. correct me if i'm wrong, but the 2" is to allow greater air flow to the pole piece and allow better cooling.?

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6.3 inches deep.
ur tape measure reads in decimals?:crazy: but seriously, with at least the 1/2" front/baffle? u should just scrap by..3 is just over a 1/4", so counting the wood thickness and such should give ya about 1/4" +/- behind the sub. of course u could just scoot your seat up a little more!:D

hope that helps.............
• 10-23-2002
gmc89
lol
Quote:

ur tape measure reads in decimals?
haha, that's just what infinity's spec sheet said, sub depth = 6.31 inches :)

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of course u could just scoot your seat up a little more!
Why didn't I think of that? Sacrifice comfort for sound. I'm a true car audio nut now! lol
• 10-23-2002
mrray13
Quote:

Why didn't I think of that? Sacrifice comfort for sound. I'm a true car audio nut now! lol
glad i could help in your demise!! lol:crazy: :laugh: :crazy: :laugh: :p
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