[Screwd-up civic]

you need to run a seprate wire for the tweeter, and you need a seprate wires for the sub then you have to run them to your cross over box witch a wire runs to your cross over box either from your head unit or your amp to power the set of componets its worth it in my point of view alpines the best sound you can get cost a little more then other speakers but you get what you pay for if you put them to an alpine amp or alipine head unit the sound is unbealveable you will hea sounds in music you never heard before This is true but if you don't have any other alpine products. Alpine alone will complement any system because they are built like that. So underdoggs is right. Also read the specs, the sensitivity level because some speaker components require usage of an amp to bring out their best which is good but if you ain't working with that. make it do what it do.