its reinforced cardboard. bump for good guy. i'm not a reference dave?????//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gifdid you build that box outa duct tape and cardboard?
well right now it prolly is since i dont even have mine installed yet but 1 9515 on a memp 4kw doin 148 is pretty good but im expecting low to mid 50,s on mine[
ducttape and cardboard but i bet its still louder then you :-\