ok here is the deal i've ran ported for the last 2 years may be i'm set on ported i'm not sure so now i'm running 4 12's instead of 2 12's in 1.25 each sealed instead of 4.5 each ported but the problem is the box plays way too much bass guitar in the sealed box and it's driveing me nutz there is no polyfil in the box but i don't remember sealed sounding so ****** any suggestions would be great it so i'll scrap it and do something else