i'm going to downgrade and go sealed and i dont need this ear damaging sub anymore.sub is still like brand new and the box is 2.5 cubes tuned to 36HTZ built by bonesninja.sub has never seen bass boost and just with my regular battery up front with no help from an extra battery in the back,it will make your sunvisor flap and sound really good doing it in a hatch allthough thats not where i normally played it cause i like my hearing.it has damged my right side hearing a lil. i'm askin $200.00 for box and sub.shipping is out of the question cause the box and sub together is quite heavy.if your around portland,tn and are interested.let me know and you can come see it for yourself. or i will trade for a descent dual 4 ohm 12" that works best in a sealed box.