BassBoomer

03-16-2003, 08:00 PM

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

View Full Version : can any one help?

BassBoomer

03-16-2003, 08:00 PM

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

biggmarc

03-16-2003, 08:05 PM

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

go to enclosure calculations

go to enclosure calculations

80_Cutlass_mn

03-16-2003, 11:04 PM

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

flyg20

03-16-2003, 11:36 PM

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

jefe1

03-16-2003, 11:38 PM

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 :D

jefe1 :nono: :D :nono: :D :nono:

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 :D

jefe1 :nono: :D :nono: :D :nono:

flyg20

03-16-2003, 11:52 PM

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

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

03-17-2003, 11:13 AM

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.)

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

03-17-2003, 08:12 PM

exactly

BassBoomer

03-17-2003, 09:47 PM

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. :D and now im wondering if u can get me the internal volume using 3/4 in. mdf? and no port, or driver.

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. :D and now im wondering if u can get me the internal volume using 3/4 in. mdf? and no port, or driver.

Trixter

03-17-2003, 10:23 PM

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

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

03-19-2003, 01:03 AM

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

saludos from mexico

jefe1

saludos from mexico

jefe1

BassBoomer

03-19-2003, 01:07 AM

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 :D

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 :D

Trixter

03-19-2003, 10:24 AM

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

03-19-2003, 12:00 PM

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

03-19-2003, 07:31 PM

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.

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

BassBoomer

03-19-2003, 11:36 PM

the driver is most likely gonna be 2 re se 10's and i dont think i have enough volume to go ported either.