I've been running these in my car since over a year now.... they get loud and remains in control. I must say they are absolutely SICK ! Most peoples would agree as if they've sat on a car thats equip with 15 or 26 speakers thats from high end cars like A8's Bang&olufsen or Merc S class's 24 speaker Burmeister... haha but thats the magic of these !!!!!! one thing you would notice is the material quality been used in it. PLEASE, they need a good high end amplifiers to shine and along with a Sub...