jl audio 13w7

hi everyone, a guy in my town has a couple new subs jl audio 13w7 for $1000 (subs only no cabinets)

i dont know anything about diy subwoofers.
i was going to use a jbl synthesis s400 to power these ( i think it might be a little weak for these subs.

are these great subs? will they compare to jl fathom series subs?

also, do i just build a six sided cabinet for each sub?
excuss me if my terminology is off, but do i need a dead passive woofer on the box aswell? how about extra wood inside the box to channel the airflow? is the 13w7 a car sub or a home theater sub?

please help me with your opinions.
thanks so kindly