Yeah, I had an 18" xcon walled. The Xcon is in perfect shape sitting right beside me in my room. The wall that the Xcon was in was about 3 years old and the mdf on the port started splitting while playing woofercooker by bass hit. So, I was like F it, the Xcon is a "SQL" woofer, so it can't be that hard to make a louder setup. The opti's have a lot more car flex and feel louder, but on my meter I'm about 2 db quieter than my xcon was. I still need to seal off my wall, and I need to brace my port, the damn thing flexes like galloping gertie. I don't know what to do with the xcon. I really wish I had a 15, not a 18. I'm also pissed at SSA for making such a great woofer. For something that is not made to get loud, it can do it pretty well....... Wait, what? Can someone please tell me who ever said the XCON was not made to be loud!!!!? I would love to meet this person, and would also guess, they have never heard one. Bunch of BS right there.