Hey guys.  I was dusting off my speakers and was cleaning around the sub cone on my 633T's.  I put the dust cloth a tad bit inside the sub cone to remove some dust when I felt kinda like a ridge inside the sub cone.  It almost feels like the sub cone is cracked on the inside.

 Is there supposed to be a ridge inside the sub cone?  If not I am going to think about getting the replaced with the warranty.

 Thanks for the help

 :o)