Im putting together a travel rig to pair with my GK mb2500 head. I purchased a pair of Kustom PA cabinets for $80 bucks each which are like 150W. i think. I also bought a pair of Eminence Delta 12s to replace those weak drivers. At 400W each, now i would have a 1x12 option to take with me to smaller churches and for bigger ones i can take both to have a 2x12 rig, which is not too much bigger than my avatar 4x10, but i think the fact that they can be separated would help a great deal in portability.
long story short, since im replacing the included driver with a new one that has a greater power rating, do i have to worry about changing the crossover as well, or is that not an issue?