check my math

[gmc89 10+ year member]

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

Click to read more...

 

[gmc89 10+ year member]

Come on guys. I posted this question on the box section but no one ever answers on it.

 

[KelBench400 10+ year member]

I came up with 0.97 ft^3 too. Hope that helps.

 

[mrray13 10+ year member]

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.

 

[ramos 5,000+ posts]

I answered it in the enclosure section //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

P.S. your math is right. But you have to account for the basket displacement. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[gmc89 10+ year member]

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?

 

[ramos 5,000+ posts]

Don't feel bad. I have done worse //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

It's usually called basket displacement , and it's usually listed with the parameters. What kind of sub ? maybe we can help //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[gmc89 10+ year member]

Infinity Kappa 120.3DVC and it's a going to be a sealed box.

 

[ramos 5,000+ posts]

Well sir, shouldn't we feel like a bunch of fools.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif After looking for the basket displacement on infinity's website. The 1cuft sealed enclosure does include basket displacement //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif oops //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif My bad //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

check it out.

http://manuals.harman.com/INF/CAR/Boxes%20and%20Parameters/1203dvc.pdf

 

[gmc89 10+ year member]

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?

 

[ramos 5,000+ posts]

About 2" more if possible. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[gmc89 10+ year member]

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.

 

[mrray13 10+ year member]

Originally posted by ramos Well sir, shouldn't we feel like a bunch of fools.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif After looking for the basket displacement on infinity's website. The 1cuft sealed enclosure does include basket displacement //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif oops //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif My bad //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

 

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

 

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.

 

About 2" more if possible

 

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.?

 

6.3 inches deep.

 

ur tape measure reads in decimals?//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif 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!//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

hope that helps.............

don't hurt me too bad ramos!!//content.invisioncic.com/y282845/emoticons/banghead.gif.8606515f668c74f6de0281deb475b6fd.gif :banghead:

 

[gmc89 10+ year member]

ur tape measure reads in decimals?

haha, that's just what infinity's spec sheet said, sub depth = 6.31 inches //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

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

 

[mrray13 10+ year member]

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: //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif