Guys,
I'm open to all suggestions. If people don't want to see the Avalanche being tested, then we pick something else. Though personally I'm slightly interested in finding out how the Ava does. I would like to give the XBL^2 one more chance, so to speak.
Are there any other interesting drivers out there beside the ones mentioned here? How about the Dayton RSS390HF or HO?
Of course the chosen drivers would have to fit in a few similar enclosures (like one ~500 liter LLT and other smaller sealed). I'm not willing to build five etc. different enclosures for them, especially when most 18 inchers require a huge box.