Posted July 6, 201015 yr So today I just receivied my first 18!!!!! An 18 fi q!!!! When I saw the size of my box I just gaped At it. It was just huge! The size of the sub is even crazyer. The thing is enormous! I was realy not expecting thing to be so heavy. So far the first impressions have been great so I caint wait to build a box for it. Fi is amazing!!!!!!!!!!!!!!