inputs.text: bumps real hard cannot go wrong - looking sub blow kicker comp rockford sub water originally bought 2 subs install car put 1 powered mrxm240 sub beast gain amp turned 25 power sub rattles entire car still sounds super clear know install profesional sub shop install right wiring amp settings no problehem systehem installed car 1 day got car 6 months no problehems sub lot people compliment cannot believe noise comes 1 10 louder lot 15s heard bumps harder taking 14 trunk opposed 34 thing would different buy smaller amp always better power less alpine systehem 2 3 cars brand still not failed good product money