i was wondering the same about my subs because a buddy of mine blew his rear window out of his 200sx, not so much the window itself, but the seals are like, slowly disconnecting. His rear window now leaks and rattles... as for 2g's they seem to be much stronger than that, i pointed my cones towards the rear of the car rather than directly at the window just to be over safe (cuz thats how i like to be sometimes)