This is my JL system installed in my 2012 Mercedes Benz C Class. 2 JL 600 slash Amp playing to two, 10" W7AE 750 watt RMS subs. Polk Audio 6.5 components, rated at 300 Watts, powered by one XD 400 Watts full range amp. Kinetic 1200 battery, Stinger 200 Amp Isolator, Power Acoustik 5 Farad Cap supplies the juice. My car's battery does not drive the system. I thank my young nephew who installed a RF system which caused me to install this to show him loud is nothing without quality...He got the point and his car is currently in the shop having his audio system being updated. He could not reproduce the low deep bass notes on his pride and joy Fosgates playing the same tracks. His remark after the clash and his loss..." a few more dollars does make a hell of a difference." I have clarity and deep bass irrespective of the volume at which I play my system, consequently I rarely play it above regular volume except to showoff.