velodyne dd-12 power consumption

hi,
i would greatly appreciate your knowledge of how many watts does a velodyne dd-12 subwoofer consume when playing music playing at normal volume. i am trying not to get another power conditioner for the sub. currently my amps, cd player, and plasma tv are sharing a running springs audio haley (1,800 watt output). i am hoping to squeeze in the dd-12 if it doesn't require too much power at normal volumes.
thanks!!!
scottie