I need some help with the size of a square port. I'm making a box for 2 type r 12", the box volume is 4.2sqf, due to limited space in trunk I'm only going to have 3" max for the port width, the height of the inside of box is 13.25", I want to tune the box to 31-33hz what will the length of the port need to be? any help will be appreciated,. Thanks.
diymobileaudio.com is the DIY car audio install forum for automotive quality and spl stereo bass. 12 volt audio installation wholesalers buy amps, subs, double din car audio head unit electronics and ipod blue tooth car alarms at discounted prices