i got a chance to set my filters with a DMM (subsonic and low pass) and took some vids.
setup is in my signature. amp set to 1600W@1ohm using 3:1 overlap.
songs used were young jeezy - thug motivation and jeezy the snowman (thanks to njizzm for the recommendation, love the song on my subs!).
disclaimer: none of the vids have sound! sorry
excursion (jeezy the snowman ~38Hz):
in the car (this vid didn't turn out too well i have to have the mirror like that or it will move until it bangs against the windshield):
windshield flex (thug motivation):
windshield flex (jeezy the snowman):
trunk flex (aka bass killer + annoying rattle)
hope you enjoy them!