can someone help me please

[jl13w7freak]

Look typically I a huge JL fan.... But I ran across this guy who had one Elemental Design 13av.2 subwoofer.... and that thing basically does everything the 13w7 do.... but the only difference is that is cost half that price.... I'm get a new set-up... So I bought four 13av.2.... and I want my box to be made with all four subwoofers pointing up.....(just like Steve's) and these are the dimensions I have to work with 32x36x20.... Im not sure if i want them all in the same chamber or seperate them.... But I do want it ported and tuned for SPL.... Im building the box myself... I ALREADY made a blueprint of my design...but im always open for a second opinion..... And u dont have to worry about me messing up because i get my Drafting Degree in December.................IT GOTTA BE VERY LOUD.... ANYONE GOT ANY IDEAS..

[AMI CUSTOMS]

Tune it to 45 hz(generalized answer) if you are going for spl. Your tune will be dependent on vehicle peak, so if you don't know what the peak is, use 1/4 theory to find out what it is. Basically you gonna need a big port that is very short for spl.