Just need some help with my car stereo system. I have a 02 chev cavalier and my sub just does not seem to be loud like it should. I have a 12" infinity sub hooked up to a 1800 watt mtx amp. It should be fairly loud but it isnt! Its pretty quiet. Also have alpine type s speakers all around with a jvc kd r320 deck. I have played with multiple settings on the deck dosent really seem to make a difference. Any suggestions?