mecpjim

hi everyone i am a new to sound splinter i am buying 4 10 inch rli in the next week i am wondering if i should do down fired sealed in my prelude or port them and tune the to something low like 25-30hz trying for as much spl and loudness as possible i was going to get 2 rlp-12s but decided on 4 8 inch rli because i had done a install on the 8 rli and was very impressed so i decided to go bigger i am thinking 1200-1500 watt mono class d?