ok so the rec. ported box for the sub is 1.3 cu.ft and the port adds up to 4 sq. in. and the port is 13.5 in long (rounded from 13.61) = 40hz do u no what i would have to do to prob get closer to 35 hz ????//content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif