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Question: What amp do I need?

Please correct me if im wrong, I have the Kenwood KFC-W3011 sub. It is a 4 ohm, 400 watt RMS, and 1200 watt peak. Im thinking of hooking up a Class D Monoblock amp that has a max power output of 1000 watts.
It has a RMS Power Rating of
4 ohms: 500 watts x 1 chan.
2 ohms: 1000 watts x 1 chan.
Im not sure if that will be just right or is that too much for the sub?