View Full Version : Ported Fiberglass Boxes... Help

03-11-2006, 10:34 AM
I am making a ported fiberglass box, and I wanted to know how I go about doing the port, when I dont know the exact internal volume until the box is made???

Any ideas anyone??

03-11-2006, 11:47 AM
its quite complex and you will need to determine the volume b4 you build, if your doing a basic 2 side mdf and the rest glass, you will need to use the 2/3 rule which is how much volume you have inside compared to if that box was fully mdf, the fiberglass box would only be 2/3 the actual volume over mdf

or you could build the box, find the volume, then use areo ports cut to the desired length for the ports

03-11-2006, 11:56 AM
I like the second option ;)

Its impossible to find out the volume before its built... its quite odd shaped, so I cant chance it...

Ill have to invest in some aero ports.

Best Place to Buy Aeroports?

03-11-2006, 11:59 AM

03-11-2006, 11:59 AM
i'm doing the same thing right now, i've almost got my box built, then i'm going to add one of their precision ports.

03-11-2006, 12:03 PM
also when finding your port length, for precision ports use this calculator (http://www.psp-inc.com/psp-inc.com/public_html/..%5Ccgi-bin%5Cport_length_calculator.cgi)

03-11-2006, 06:18 PM
precision ports ftw