View Full Version : Find cubic feet of a sub box

10-18-2007, 11:22 AM
I was wondering if anyone here knows how to find the actual cubic feet for a sub box? I have looked at several different websites, but they all had different formulas. I was planning on making a ported box, but i do not know if the formula is different from a regular box

10-18-2007, 11:30 AM
Cubic feet is cubic feet is cubic feet. Lengthxwidthxdepth of the interior space. Don't forget to subtract out the space taken up by the port, if it extends into the the interior. Plus the port will impact the wave front. It's pretty complicated that even experts will argue for days over. I might suggest going to audioholics.com and asking the group over there for help. I bought my driver from madisound.com and followed their construction, ending up with an awesome sub.

10-18-2007, 09:00 PM
thanks for the information i will look into those two websites