That's not really true. Power handling is determined by the box size and box style (ported/sealed). In most ported applications (and some sealed), subs don't need to receive their full RMS to reach their maximum potential. Sometimes even half (or less) of their rated RMS will push them to their limits.and make sure u give that sub atleast the rms it calls for. Even over do it a 100 watts or so. Its good for it =).