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t-money
09-26-2012, 07:24 PM
I am having a box built and my friend says the internal volume will be 29.5 inches wide, 15.5 inches high and 11.75 inches deep. My sub displaces 0.25 cubic inches

Is it possible to tell me if this box will be 3cf after displacement

double 07
09-26-2012, 07:35 PM
That's 2.85 cf

ewadz3006
09-26-2012, 07:35 PM
2.859

t-money
09-27-2012, 07:26 AM
So this box here is not 3cf sealed

http://i102.photobucket.com/albums/m99/t-money_72/SImag15sealed2.jpg
http://i102.photobucket.com/albums/m99/t-money_72/SImag15sealed.jpg

t-money
09-28-2012, 12:14 PM
so since the box is double baffled, does it now make it 3cf after displacement. Sub displacement being 0.25 cbuic feet

Jerhemy
09-28-2012, 12:21 PM
I got 2.86 cubes after sub displacement.

11.75 x 15.5 x 29.5 = 5372 cubic inches = 3.11 cubic feet - .25 = 2.86 cubic feet

Jerhemy
09-28-2012, 12:28 PM
What sub are you running? jw

Falcons
09-28-2012, 01:18 PM
What sub are you running? jw

dem 15" sony xplods

Jerhemy
09-28-2012, 01:27 PM
dem 15" sony xplods

hOT **** SON! should probably double and triple up on the mdf all around then.

t-money
09-28-2012, 03:07 PM
What sub are you running? jw

SI Mag 15v3

So seeing how everyone got 2.86 cf feet without taking into consideration it's double baffled, doesn't the extra 3/4 inch the sub sticks out add to the internal volume?

Jerhemy
09-28-2012, 03:16 PM
all the air space you will be gaining is an extra sub hole cut out's volume, added to the entire interior volume.

So you will be adding ~~.067 cubic feet to the interior of the box.

~2.9 cubes total.

t-money
09-28-2012, 04:00 PM
Well i asked for 3cf max since thats what SI recommended, So 2.9cf is good enough. SI recommends 2.3-3cf