Help!! What do i need to do!? Im new to this

I'm new here so i have no idea what im dealing with. Car audio is not my specialty whatsoever. That being said let me explain the problem. I bought my car with a kenwood BT362U head unit. Its got 6.5 kicker CS in the front and two unknown brand(not stock) 6.5 in the rear. It has decent quality when low, but It just static especially if i add bass. My other car has stock speakers and sounds decent with a head unit. Is it too much power needed by the speakers themselves??