Gross vs net volume?

[67bass71]

I am designing and building a box for a friend that will hold 8 12's, anyway this may sound like a noob question but i am aiming for about 2 cubes per sub right now my current box design has a gross volume of about 18.06 and after all of my port displacement and sub displacement I have only 14.68 net volume. My question is will this box be fine or will it be to small.

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[jrdnhsnbrg 10+ year member]

What could you possibly be putting this box in...

 

[67bass71]

In the back of a ford exploer

 

[jrdnhsnbrg 10+ year member]

In the back of a ford exploer

I can't wait to see what you come up with, that's a BIG box. I don't have the slightest clue about box building though.

 

[67bass71]

He bought all the subs for 400 dollars from sonic during there black Friday sale that was about 50% off it's about 800 dollars worth of subs so I said hay let's see if we can get 50's with a bunch of cheap subs on a lil over 2k lol. The current box design has all the walls doubled up tuned to 30 with about 156 inches^2 of port area.

 

[jrdnhsnbrg 10+ year member]

He bought all the subs for 400 dollars from sonic during there black Friday sale that was about 50% off it's about 800 dollars worth of subs so I said hay let's see if we can get 50's with a bunch of cheap subs on a lil over 2k lol. The current box design has all the walls doubled up tuned to 30 with about 156 inches^2 of port area.

What subs?

 

[67bass71]

Nvx nsw124's so they are the higher end of entry level subs.

 

[67bass71]

I would put them on about the same level as a sundown e.

 

[67bass71]

What I seem to be coming up with is about 1.835 cubes per sub. Witch is a little on the small side.//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[67bass71]

I made the bottom of the box signal layer made my net a lil higher 15.22 I think that should do it it's close enough lol like 1.9 per sub.