i need some serious help on this matter i can only go like 9 inches deep max on the port its a removable slot port but im trin to find the formula or whatever i need to change the freq when i want SOMEBODY PLEASE GIVE ME SOME INFO ON THIS.
use these MA 18's there cheap but will pound way harder than pyles and still give u a .5 ohm load 300-400 watts will make them sound good
http://www.onlinecarstereo.com/CarAudio/ProductDetail.aspx?ProductID=20088