i would like to start by thanking everyon for their previous assistance and advice. I followed the advice, and sure enough the system bumps! But now i have a new question - the volums in the Lexus RX 330 goes up to 62 . .. i have the JL Audio W7 13 inch hooked up to the JL Audio 1000/1 amp . . . is it a good idea to "break the sub in" by playing my music below level 20 for the first few days? if so, why and for how long? thanks again!