yah, the subs should take, clean, the extra power the amp might be putting out. now, prefab boxes, even yours may be junk 99%+ of the time, however, it is certianly not at all likely that the port is too big, unless it's a sealed shared chamber box that is missing one of the subs. you should find a shop that knows how to properly set the gains and head unit settings, and will use at least a meter, sometimes a scope, to do so. honestly, with an unlimited budget, you could have pro-rabbit and splaudio team up and build you a custom sub and enclosure that will make you forget the kickers. addmittedly, i am a kicker fan, pretty much an old school kicker fan, though, and they will get loud under some abuse, so there is something happening wrong. by "clipping", we basically mean, when it it get's so loud then just starts changing sound a little, you have gone past clipping. in short, it means that you are feeding the subs more current, but they are moving less, and will cook. you can alsoo clip if the wiring has a problem.
