can any one help?

[BassBoomer 10+ year member]

can some one figure out the cubic feet of this box?

Click to read more...

 

[biggmarc 10+ year member]

http://www.eatel.net/~amptech/elecdisc/caraudio.htm

go to enclosure calculations

 

[80_Cutlass_mn 10+ year member]

I got roughly 5.3 +- a few 10th's cu ft. Anyone agree?

 

[flyg20 10+ year member]

i got about 5.607638889 cu ft, not factoring in the airspace for the woofer and port volume.

 

[jefe1]

ok here what i got.......................

34 w, (b27+t5)/2, (13h1+7h2)/2

34 x 16 x 10 = 5440/ 1728 = 3.15 cuft

thats the way to make a wedge box where you have, bottom plus top, you must divide itby two and the result is one of the measures you multiply by the height and widht

im here to learn if im wrong let me know....................

saludos from mexico //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

jefe1 //content.invisioncic.com/y282845/emoticons/nono.gif.eca61d170185779e0921b0faa9704973.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif//content.invisioncic.com/y282845/emoticons/nono.gif.eca61d170185779e0921b0faa9704973.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif//content.invisioncic.com/y282845/emoticons/nono.gif.eca61d170185779e0921b0faa9704973.gif

 

[flyg20 10+ year member]

jefe1 you are wrong.

according to my geometry lessons:

separate the volume into sections to simplify. so, we got a rectangle at 13X5X34, another rectangle at 22x7x34, and a triangular prism with base 22 x height 6.

13x5x34=2210

22x7x34=5236

.5(22)x6x34=2244

(2210+5236+2244)/1728= 5.607638889 CUBIC FEET

learn

 

[Trixter 10+ year member]

Heres what I came up w/...

Divide the box into 2 rectangles and a triangle....

rec. 1: 13 x 5 x 34 / 1728 = 1.28

rec. 2: 22 x 7 x 34 / 1728 = 3.03

the tri.: 6 x 22 x 34 / 2 / 1728 = 1.30

the total: 1.28 + 3.03 + 1.30 = 5.61

(I calculate triangles a little differently, but I think it's easier this way.)

 

[flyg20 10+ year member]

exactly

 

[BassBoomer 10+ year member]

Originally posted by Trixter Heres what I came up w/...

 

Divide the box into 2 rectangles and a triangle....

 

rec. 1: 13 x 5 x 34 / 1728 = 1.28

rec. 2: 22 x 7 x 34 / 1728 = 3.03

the tri.: 6 x 22 x 34 / 2 / 1728 = 1.30

the total: 1.28 + 3.03 + 1.30 = 5.61

 

(I calculate triangles a little differently, but I think it's easier this way.)

uve been a great help. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif and now im wondering if u can get me the internal volume using 3/4 in. mdf? and no port, or driver.

 

[Trixter 10+ year member]

lets see....

base: 25.5"

front: 6.25

back: 11.5"

top: 4.25"

width: 32.5"

plug the number in and you get....

rec. 1: 11.5 x 4.25 x 32.5 / 1728 = 0.92

rec. 2: 21.25 x 6.25 x 32.5 / 1728 = 2.5

tri. : 21.25 x 5.25 x 32.5 / 2 / 1728 = 1.05

toatl: 0.92 + 2.5 + 1.05 = 4.47

 

[jefe1]

many thanks friends for this geometry lesson and you are right...................

saludos from mexico

jefe1

 

[BassBoomer 10+ year member]

Originally posted by Trixter lets see....

 

base: 25.5"

front: 6.25

back: 11.5"

top: 4.25"

width: 32.5"

 

plug the number in and you get....

rec. 1: 11.5 x 4.25 x 32.5 / 1728 = 0.92

rec. 2: 21.25 x 6.25 x 32.5 / 1728 = 2.5

tri. : 21.25 x 5.25 x 32.5 / 2 / 1728 = 1.05

toatl: 0.92 + 2.5 + 1.05 = 4.47

4.47 is the internal right? thanks for all the help guys //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Trixter 10+ year member]

I divided the box up a few different ways to check the math and still came up w/ the same number. 4.47-4.46 somewhere in there.

 

[biggmarc 10+ year member]

what about the width of the enclosure how do u get ft3 if you don't have it or the port size and lenght

 

[Trixter 10+ year member]

The width of the enclosure is 32.5 (34 - (.75 x 2) = 32.5). As he said in his above post, "....and no port, or driver."

We can't figure out the displacement of the port (or the driver for that matter) 'cause he did not provide the info.