fucking out standing, my audio guy was amazed as well when he listened to it, said that is the loudest he has ever heard them, just make sure you point it to the back so the sound bounces off the rear hatch and forward, same as you would in a car. I personaly think they are excelent for the price compaired to others in the same price range....bass for rock music is tight and hard hitting, long bass hits tickle the neck hairs and tickle the ears
(edit) If you are not certian what kind it is pull it out of the box and look on the back of the magnet should say there, W1's are usually 150rms@ 4 ohms and 300max, depending what ohm subs they are, they make them for 2,4,and 8ohm