1. ## how do i calculate the cubic airspace of an enclosure?

How do i do that??

2. ok dood the basic formula is depth x width x height (of interior dimensions not external)... but there are more complicated enclosures and what not hence resulting in multiple formulas depending on box shape size and wot not.,...
this is a site that is all u would ever need to know about anything related to car audio but there is a section in the site that does the enclosure calculations for u....
http://www.eatel.net/~amptech/elecdisc/caraudio.htm

u will find this site to be the answer to just about any question u will ever have

3. L x W x D / 1728 = X^3

to find the internal jus subtract the displacment of the sub from the total from above

4. how do you find the displacement of the sub?

and why do you divide by 1728?!?!?!?!?!?

5. on the spec sheet you get with your sub, that is where you can find its displacement.

6. 1728 is 12x12x12

basicly the number of inches in 1 cubic foot of space....thats how you convert it to ft^3

7. oh, ok

so it's L (in inches) times W (in inches) times H (in inches) = x

x/1728 = cubic feet

8. correct....then just subtract the cubic ft. of displacment of your sub or the cubic inches before you divide by 1728...good luck

9. Ok, I haven't got my subs yet, so I don't know the exact figure, but I subtracted .07 ft^3 for a 12, I got that number from http://www.eatel.net/~amptech/elecdisc/caraudio.htm.

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