I Have Done Alot Of Searching And I Have Not Been Able To Find A High Quality 12" Sub That Can Fit In A Sealed Enclosure That Gives About .5 Cu Ft. Does Anybody Know Of Any That Can Fit In An Enclosure That Small And Also Has A Mounting Depth Of 5.5" Or Less. Cost Is Of No Concern. I Am Looking For The Very Best. Please Help!!!! ALSO IF THERE ARE NOT ANY 12" HOW ABOUT SOME 10" THAT WILL WORK WITH THOSE MEASUREMENTS AND KICK ROYAL BUTT!