I've gor two kicker L7 15" on an ap3000. For the price, that amp is amazing! The subs are sealed in about 2 cubes each. I am over powering them cuz they're getting 1500 watts but theres no distortion and the boxes are small. Gonna shrink them this weekend down to about 1.5-1.7 though anyway just to change it up. I did sealed just so i could get them installed easier. Soon gonna sell them though and get some much better subs. Like Fi BL's. Kenwood headunit running the door speakers. Was gonna put an amp on the speakers but didnt need to when i put that headunit in. The speakers are Infinity coax's 5x7 in the back, 5.25 in the front