# Can someone tell me if this box is 3cf after displacement

• 09-26-2012
t-money
Can someone tell me if this box is 3cf after displacement
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
• 09-26-2012
double 07
Re: Can someone tell me if this box is 3cf after displacement
That's 2.85 cf
• 09-26-2012
Re: Can someone tell me if this box is 3cf after displacement
2.859
• 09-27-2012
t-money
Re: Can someone tell me if this box is 3cf after displacement
• 09-28-2012
t-money
Re: Can someone tell me if this box is 3cf after displacement
so since the box is double baffled, does it now make it 3cf after displacement. Sub displacement being 0.25 cbuic feet
• 09-28-2012
Jerhemy
Re: Can someone tell me if this box is 3cf after displacement
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
• 09-28-2012
Jerhemy
Re: Can someone tell me if this box is 3cf after displacement
What sub are you running? jw
• 09-28-2012
Falcons
Re: Can someone tell me if this box is 3cf after displacement
Quote:

Originally Posted by Jerhemy
What sub are you running? jw

dem 15" sony xplods
• 09-28-2012
Jerhemy
Re: Can someone tell me if this box is 3cf after displacement
Quote:

Originally Posted by falcons03079313
dem 15" sony xplods

hOT DAMN SON! should probably double and triple up on the mdf all around then.
• 09-28-2012
t-money
Re: Can someone tell me if this box is 3cf after displacement
Quote:

Originally Posted by Jerhemy
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?
• 09-28-2012
Jerhemy
Re: Can someone tell me if this box is 3cf after displacement
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.
• 09-28-2012
t-money
Re: Can someone tell me if this box is 3cf after displacement
Well i asked for 3cf max since thats what SI recommended, So 2.9cf is good enough. SI recommends 2.3-3cf