More cone area so the 15's SHOULD be louder. But that is not only the case, if you decide to choke them then they wont perform to the best of there ability. You think you can fit around 6-7 cuft before displacements??
Probably Dual 1 and Dual 2 like the Xcon, regardless they will have the wiring options to get to the ohm loads you need. Updates will be posted when they have something to update with, you will find out just like everyone else any new information.
Heres my opinion: Jl audio is mass produced and although the research is there there speakers are JUST AHHHH AHHH AHHH no SQ at all. but on a good note you only need 1000rms to make them MOVE! my brother in law had two 13.5 W7 in a dakota with the matching Jl audio 1000.1 V2 to each speaker and it POUNDED no doubt about that but I had 1 18" BTL in a jimmy and a hifonics amp and was POUNDING just as hard as him. Underground companys(not mainstream) are in this for what it is the LOVE of the sport or hobby/ I would suggest the XCON because the money is going to be put to a better use like supporting a company that is trying to GROW and make a way better PRODUCT then mainstream for a fraction of there price! Mark is a great guy and the XCON is a great product. I hear 1 12" XCON in a trunk and I would of voted that it was 2 for sure..... It was CLEAR pounding bass as well. You could feel as well as hear every note POUND! so from one who has heard and felt both I VOTE XCON!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!