1. ## how to build a box

i cant not figure out how to build a box right. when ever I do my calcultions it never works out to what the computers are getting.

for instace for a box that is
14" H
38" W
14" D

i multiple these together and then divide by 1728 and get 4.0023 cu ft

but when I enter it in the calc I get 3 cu ft why?

the computer doesnt account for speaker dis either and I know wood dis is not the much. so whats wrong?

2. ## Re: how to build a box

youre not taking the 3/4 MDF board you will be using. The dimentions are the outer dimentions, not the internal
good day

4. ## Re: how to build a box

Originally Posted by binterpid
for instace for a box that is
14" H
38" W
14" D

i multiple these together and then divide by 1728 and get 4.0023 cu ft

but when I enter it in the calc I get 3 cu ft why?
account for the thickness of the wood. assuming you're using the standard 3/4" MDF:

(14-1.5)*(38-1.5)*(14-1.5)=x
12.5*36.5*12.5=x
5703.125=x

5703.125/1728 = 3.3 cu ft.

you subtract 1.5 because there are two pieces of wood for which you are subtracting the thickness. hence 3/4 x 2 = 1.5.

5. ## Re: how to build a box

thanx for the help

6. ## Re: how to build a box

psst. dont listen to jordan. that site isnt as accurate as HE thinks

7. ## Re: how to build a box

Originally Posted by NhustlaR
psst. dont listen to jordan. that site isnt as accurate as HE thinks
She

8. ## Re: how to build a box

Yah SHE....sorry i got that website and it worked fine for me so HA

9. ## Re: how to build a box

my b. sorry for the disrespect. but that site still isnt tooooooo reliable.

10. ## Re: how to build a box

sorry i just was tryin to help..

11. ## Re: how to build a box

i understand...

12. ## Re: how to build a box

what kind of system do u have ? nhustlar

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