A noob question for the masses!

[Colt9699 10+ year member]

I want to make a sealed box for my rlp and i just dont know the formula for figuring out internal volume........

Looking to make a 2.1 cube sealed box for a 15" rlp.

any help would be appreciated.

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[Duke 10+ year member]

Do you want that to be your net volume?

Anyways, Length X Height X Depth (inches)/1728 = cubic foot volume. What are your dimension restrictions?

 

[Colt9699 10+ year member]

Do you want that to be your net volume?

Yes im sorry 2.1 net after driver displacment.

 

[Megalomaniac 5,000+ posts]

(# x # x #) / 1728.

 

[Colt9699 10+ year member]

i have a ton of room to work with so no real space concerns.

 

[Colt9699 10+ year member]

now how do i back figure that to get to 2.1 net?

 

[Duke 10+ year member]

Lets say just enough space on one side to fit the sub, so 16.5 x 16.5 is what we will shoot for for the first two dimensions. So, multiply 2.3 (assuming the displacement is .2 for the driver) by 1728, then divide that by 15(subtracted 1.5" for wall thickness), then divide it by 15 again, and that answer will be the final internal dimension. Then, you add 1.5 to each dimension because of wall thickness. You end up with 16.5 x 16.5 x 19.164. Thats not optimal dimensions, just an example.

Man, I hope that makes sense to you.

 

[acold7dusta 10+ year member]

FYI sealed doesnt have do be as precise as ported. you can be .3 off and i bet you wouldnt notice an audible difference.

 

[Duke 10+ year member]

FYI sealed doesnt have do be as precise as ported. you can be .3 off and i bet you wouldnt notice an audible difference.

Word.

 

[acold7dusta 10+ year member]

just dont think too hard is what im saying. find the space where you want it to be whip up the length, width, height thatll fit in good. if its 2.0 your good. if its 2.5 your good. you're making a big deal out of nothing really. ported on the other hand though...

 

[Duke 10+ year member]

I'm just trying to get the general idea to him. Not trying to make a big deal out of it.

 

[acold7dusta 10+ year member]

i know, the original poster though is try to get exactly 2.1, when in the real world, it wont be very different

 

[Colt9699 10+ year member]

i think i may have done it

I went with

18x18x12.5 for a net of 2.133

 

[Ctminime 10+ year member]

yea man ported boxes if you screw up area a little bit it throws off tuning and all that crap....

 

[Duke 10+ year member]

Perkins.