PDA

View Full Version : ok QUESTION



jk123
08-25-2007, 03:32 AM
How do you measure the cubic feet inside of a box when building it? thanks

IM going to try and build a ported box for 3 12" subs at 1.2 Cubic feet per sub

alxmlr789
08-25-2007, 03:42 AM
1.2 seems a tad small for a 12" but here

http://www.caraudio.com/forum/showthread.php?t=215849

IamDeMan
08-25-2007, 07:47 AM
Which drivers are they? As stated 1.2 definitely seems a bit too small for a ported 12. Most 12s require that much space sealed.

Immacomputer
08-25-2007, 11:14 AM
You get the desired volume before you build the enclosure. That's involved in the design, not the construction.

The easiest way is to use Sketchup to build the enclosure in a 3D environment and then leave the top off. From there, select the section of the bottom and get the area from it. Multiply that number by the height to get the total volume of the enclosure. If the height is in inches, divide it by 12 to get the cubic feet of the enclosure.