my bro bought a 15 memphis audio subwoofer. we wanna build a box for it but on the specs, its says that the box must be 2.5 cubic ft. wtf does that mean? if anybody can tell me the measurements in L*w*h.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by futurefastguy &raquo;</TD></TR><TR><TD CLASS="quote">my bro bought a 15 memphis audio subwoofer. we wanna build a box for it but on the specs, its says that the box must be 2.5 cubic ft. wtf does that mean? if anybody can tell me the measurements in L*w*h.</TD></TR></TABLE>

That means the volume of the box is 2.5 feet^3...if that's easier for you to understand.

Use this page to calculate your measurements: http://www.the12volt.com/caraudio/boxcalcs.asp

 

multiply the inside dimensions (inches) together and divide by 1728 that will give you cu ft

 

1ft x 1ft x 1ft =1ft^3 (cubed)
1ft x 1ft x 2.5ft= 2.5ft^3 (cubed)
Converting into inches
12in x 12in x 30in =2.5ft^3 = 4320in^3

Multiply your internal dimesions together (length, width, height) and it should be atleast 4321 cubic inches.

 

is that ported or sealed?

 

Which 15" sub, [model]?

Is the 2.5cuft gross or net volume? 94