i got some typr-rs in a explorer and the dang back window keeps shaking.. the idiot at cartoys was like " well you dont do anything about it" im like yea but.. right know im running them really low i have them on one MRD-605 ( 300 watts each) eventually gonna move to the MRD-1005 to meet the rms after i break them in.. so i figure it will just get worst..