yeah i know where you are coming from fella, and i thought about the exact same thing when i done it, i was going to try and seal my door up it i wasnt real happy with the result. but there is no need to, the sub, are so crisp and very quick, they are only 8" so they are not sloopy. and for the vibration, i have fully dynamated the inside of my doors, so more music in side the car, and there is no vibration nosie what so ever in my doors.

oh and i never said that i paid 700-800 dollars for anything pioneer, i am not silly, i said that my diamond audio 5' splits are that much big difference