This sub is WAY over rated. Had them come through my shop in the past and after 2 pairs I 100% refuse to install them. First set was on an AutoTek amp from a package deal. Gave them about 750wrms per sub. It wasn't that loud to begin with, and a week later they were locked up. Swapped for Alpine Type S 12"s and it was MUCH better. Louder, clearer, etc. Same story for the other ones I've used. Short short life, even giving them less power than they recommend. If you compare this to, say, a Type R, the build quality, weight, suspension stiffness, etc is instantly noticeable. Going off of pure feel, a solid estimate of RMS rating they could handle would probably be about 300watts, give or take. Much more and they WILL lock up. Boss Audio's lofty rating system is OK when using a full Boss Audio system.. their 2000w sub only can handle 300 watts.. but then again, their 2000w amp only puts out about 300 watts! Perfect.. It's a huge marketing scheme to get uneducated buyers into their products based on lofty number that are, bluntly, lies.
For this price you're way better off buying something else.. JBL, Kicker, Alpine, Kenwood.. they all have subs in this price range that perform better than the Phantom series. Save yourself the embarrassment of walking into your installation shop with these, or any Boss Audio equipment. It'll also save you the hassle of returning them when they inevitably fail.