There's no need to act like retards. I've probably owned and installed more subs than most people on this forum so don't take my low post count for granted. The reason powerhandling increases as enclosure size increases is specific to this sub in particular: the cone has a problem with higher power in very small, sealed enclosures. The pressure present in such small enclosures causes the (relatively thin) cone to buckle under the pressure. So where you can run the sub in a 1.5 cubic foot sealed enclosure with 800w rms with no problems, it is not advised to run it in a .7 cubic foot sealed enclosure at 800w rms due to the cone issue. The sub's powerhandling can therefore be increased as enclosure size increases, as long as the enclosure size and power remain reasonable based on suggested setups (and t/s parameters).