rockfor fosgate p2d4

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    Wattage too low or too high? Help

    I have two rockford fosgate P2D4-12's but one is an older model rated at 250 rms and a newer one rated at 400 rms. I have them both in a sealed box. I'm going to hook them up to a planet audio 1500 watt monoblock amp. If I hook them up at 4 ohms and feed the subs about 500 watts, will both of...