ive got 2x pioneer 6x9s in the back. 40 rms each. im running a Dual 2 channel amp 100 watts per channel. but ive got the input and the bass boost way down and its loud as hell. im not sure how far i could turn the screws. what will happen when im putting too much into the speakers? will they just blow or will i hear some distortion of some kind? any tips?