Rockford Fosgate 18" spp-184

my buddy has a rockford 18" sub the spp-184 is the model, was wondering if anyone could give my a little insite about this sub, what it can do how good is it what its worth that sort, let me know peeps

id say fuk the sub. In my opnion the shits too big and when u really wanna pound it its gonna not sounds good at all, from the cone flexing.

what vehicle would you be putting it in?

it not mine i was just curious about the sub