Originally posted by Mac2118@Oct 8 2003, 07:29 PM
it's a ported box... what it does is gives you more output at different frequencies..
if you want, you can give me the box dimensions, port length, and the size of the port opening and I'll tell you what frequency it's ported at
I've had 3 ported boxes.. technically 2... one was 4cu ft with 2 RF HX2's in it ported at 40hz, then 2 RE HC12's in the same box, and that gave me a boost at 40hz... the other box is 2 cu ft ported at 30hz... if you look at a graph of the response curve, you'll notice a peak at a certain frequencies...
ported boxes will give you a larger output too. most SPL competitors find out what the resonant frequency is in their car (car's natural boost,.... the car has a certain frequency that is louder than all others in it) and they use that to their advantage by tuning their box to that frequency and burping that note...
it's not good for you to play below the tuning frequency, if you do, the subs think they're in freeair, and that will hurt your subs...