i have 12' audiobahn so im not worry about sq i want max spl
1. should i tune it at recommend 37hz or go lower maybe 33hz i listen to rapso maybe i can get more lower end bass upper 20. Rap does seem to go under 30hz often 2. i have (2)12" so if my specs page states 3.3c/ft i have 2 speakers i have to go 6.6cu/ft tuned @ whatever , could i do a 4.5cu/ft.