I know many of you have either owned an Avatar SB126 or modded a SB112 so I have a couple of questions for you guys. My SB126 is the Alpha 6/ Delta12lf setup but I recall Avatar used to offer a 1.6K crossover frequency as an option. I happen to have an old Eminence PBX 1.6K crossover from back when Eminence used to sell them cabinet ready. I've thought about swapping out the Avatar crossover for this but wonder if this mod be worth doing? I plan on putting in an Eminence 3012lf down the road and I know that speaker starts to fall off frequency wise much sooner than the Delta. I did a search for this but didn't see much except for one other guy doing this. The other thing I was wondering about is if I do put in a 3012lf should I consider blocking a port to lower the tuning?