How do I build a box to specific specifications (Cu. Ft)?

[MikeWR 10+ year member]

Hello, I was wondering how I build a sealed enclosure to a specific size in Cu. Ft. The subs I'm using say the recommended sealed box should be 1.09 cu. ft. SO how do i measure this and build it?

Thanks!

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[mazdakid 5,000+ posts]

Internal length x width x height divided by 1728. Your sub will displace a small amount of air too.

 

[hottrockz]

Yep Mazda kid has it right.

 

[MikeWR 10+ year member]

So how do i go about building it, how do i calculate out the dimensions in inches?

 

[hottrockz]

u might want to build it about 1.3 cf cause the speaker will take up some of that space

 

---------- Post added at 05:46 PM ---------- Previous post was at 05:45 PM ----------

 

yeah in inches

 

[MikeWR 10+ year member]

WHat I am actually doing is building a cut-through in the bed of my truck, so I'm trying to figure out how to build the correct size enclosure for each of my subs.

Look at these pictures and you'll understand:

 

[mazdakid 5,000+ posts]

If your box was made out of 3/4" wood and the external dimensions were 30x20x14 you would calculate 28.5x18.5x12.5=6590.625. You take that number znd divide by 1728 which equals 3.81 cubic feet.

 

[hottrockz]

13 by 13 by 13 will give you 1.27cf

 

[mazdakid 5,000+ posts]

That would be a bandpass box.

 

[MikeWR 10+ year member]

Do you think it would sound good in my truck? I'll be putting two Rockford P3's in it.

 

[hottrockz]

that box looks ported

 

[MikeWR 10+ year member]

The speakers will be facing towards the middle of the box (face-to-face)

 

[LosIsATool 5,000+ posts]

The speakers will be facing towards the middle of the box (face-to-face)

Thats not sealed its a bandpass. Dont go off sealed specs

 

[MikeWR 10+ year member]

Okay, so how do i get the bandpass box specs, since they only give sealed and ported recommendations?

 

[2007rustanggt 10+ year member]

Build to sealed specs on one side and to ported on the other equals bandpass. So if it wants 1.09 cuft sealed and 2.5 cuft ported then thats how you build it. Never heard a bandpass box that i personally liked. Too boomy for my taste.blah