got like half an hour of testing time. I put some screw on the top mdf sheet and it seems to help a little. I realize that the car was rattling a lot more than with my alpine type r 12 even if there's a shitload of dynamat extrem on big panel of the car. The sub is loud too, as loud as the type r which surprise me but ain't sounding good at high level coz of all the rattling //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif