Okay, my question is, is car audio the same principal as home audio. Meaning, my Alpine CDA-9835 head unit has built-in crossovers and so do my Alpine amplifiers. Do I turn the crossovers on the amplifiers all the way up or disable them to allow my head unit to handle them to prevent double filtering or are the crossovers independent of one another? Here is a pic of the amplifier controls http://www.crutchfield.com/App/Produ...0MRPF300&g=120 Do I just set the filters to "OFF" which in return would disable the crossovers? Any help would be greatly appreciated.