Box is 4 cubes after displacement with 3 4" areo's. Spl wise it burped a 149.3 with the door open at 35hz. And since the coil config is settup for the 4500 to run at .5 the saz 2k's that are in there now are strapped at 2ohm and after rise clamped at 2588 watts. So it did that score and is movin all that air with basicly rms power on it lol