View Full Version : ported box rockfordfosgate

11-22-2003, 10:48 PM
ok im building a box for 2 10" rockfordfosgate punch 300 watt subs im thinking about 1 cf each? and how do i find out how big to make the ports and how long? on the website it says
Ported box -

Recommended Volume (Cubic feet) - 1.0

F3(Hz) - 35

Number of Ports - 1

Port diameter(Inches) - 3

Port Length(Inches) - 13.25

but im trying to make a slot port and that sounds like there explaining a tube port

11-23-2003, 04:35 AM
Basically the only thing you need to do is come up with the width and legth that will equal the area of the port.. for instance

a 3 inch tube port has an area of

3 x 3.14 = 9.42

so the slot port could be

1 inch by 9.42 inch

the port length stays the same.