inputs.text: 3 thehem tweaking - honesty not know think first lengthy review mostly expect installed whole system set alpine f300 amp kenwood deck rear kappas front powered subwoofer didnt like sound coming system days found need tune system im used stock systems used option bass treble bass boost bass level gain low passhigh pass filters treble mids tweeter level mess online instructions tune systems well instuctions amp deck would thought instructions haha bottom line great speaker need learn make sound best car audio equips especially newbie like pros get 130 authorized dealers onlinecartoys retail around 250 best buy set punchy dont sub wont drowned sub unless set sub way high cross overs look clean clear even loud volumes tweeter level adjustment really like crank without harsh tweets cons might need sound dampening make hu amp power woofers bass might pro like bass door panel cross overs labeled low profile hard find place door panel limited space like scion tc took 3 hrs trial error buy want great quality speaker recommendations 100 type alpine 150 type rs price no object type x around 200ish since never heard alpine xs im recommending research no one disjointed bad price range