Well this is my first post, as well as my first purchase ive made with Fi CAr Audio. My 4 15's will be here in a couple of days,..my amps are installed,...the box it built.....the car has been heavily sound deadened......Do i need to break in the subs before i really see what they can do? If i do or if you recommend that i do what are the procedures in doing so and doing it properly.....Any help would be greatly app. Also what would the power handling be on the SSD 15 Dual 1 ohm if it was upgraded with the copper coil and bp power option? They say it will raise the power handling from 200=500 watts depending on application? What determines that? My box is about 10 cu ft and tuned to about 36hertz? Again any help would be greatly app. Thanks guys and thanks Fi, Gerron T.