The reason i ask is I currently have 4 10's (Memphis PR's) and my favourite part of the this setup is how at low freqencies you can just feel your entire body shake (where as I have heard louder setups with 2 12's but you just didn't shake the same).
Now I am attributing this aspect of it to more cone area (which I may be wrong but please correct me if I am).
I want to upgrade but I am not sure what I should upgrade to. 4 better 10's, or 2 12's (DD 2500's) or a single 15 (DD 9500 or RE XXX). I am looking for SQL and really want it to move me on the low end. Whichever I do I have ~5^3 net to work with.
