Conclusion: I did an install for a former manager of mine using these subs. They went in a Mercury Mountaineer in a sealed box. They came with a box, amp kit and an Autotek amp. I don't remember the wattage of the amp but it pushed the 12s well. I was pleasantly surprised by what heard.
Conclusion: This is not a bad sub for someone who is just starting out in the car audio world, or who just wants some more bump in the trunk. Kenwood has great build quality and these are good value for what they are, they play fairly loud and cleanly if powered properly.