for 2 jl audio 15w3....that will fit in my trunk
on jlaudio.com it requires 3.5ft^3 each for ported...but idk if that will fit...may have to go sealed
dont rlly know how many hz...some1 said 28, and some1 else said 3.0ft^3 each @ 33-35 hz????
idk nething bout it so just tell me what to do....please