How do I stop my winshield

When I turn my sub up loud my winshield rattles wicked badly, you can even hear it from outside the car, is there anyway to stop it! YOU MUST STOP THE INSANITY.

Sub 1000 watts
Amp 02KX1200.1 Kicker

ps Is my amp good?

rattling comes with the teritory when you have a loud bass system. Your winshield may be in a high pressure node .... try moving the box a little

The box is in the back seat facing forewards and cannot go in the truck because its simply too big to fit.

you can still try moving it around a little while the car is sitting still ... to see if it changes anything