My friend owned a PPI DCX 12" it hit pretty well in a sealed box. I later purchased it and blew it.//content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif it took a ton of abuse before dying though. I'm no expert, but I'd say the DCX series are decent subs.There are probably better options in the price range. but I hear the old flat cones are nice.