1. ## 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

2. ## Re: Can someone tell me if this box is 3cf after displacement

That's 2.85 cf

2.859

4. ## Re: Can someone tell me if this box is 3cf after displacement

So this box here is not 3cf sealed

5. ## 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

6. ## 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
Last edited by Jerhemy; 09-28-2012 at 12:34 PM. Reason: used wrong dimensions

7. ## Re: Can someone tell me if this box is 3cf after displacement

What sub are you running? jw

8. ## Re: Can someone tell me if this box is 3cf after displacement

Originally Posted by Jerhemy
What sub are you running? jw
dem 15" sony xplods

9. ## Re: Can someone tell me if this box is 3cf after displacement

Originally Posted by falcons03079313
dem 15" sony xplods
hOT DAMN SON! should probably double and triple up on the mdf all around then.

10. ## Re: Can someone tell me if this box is 3cf after displacement

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?

11. ## 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.

12. ## 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

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