Good luck with the install and don't forget about the Big 3.LOL! Gotchya.....yeah, in that case, I won't go over 100hz. I just like my highs to be really crisp, that's why i put it up to 125hz sometimes.
Man, I can't wait until this weekend! Me and a bud are doing the entire install in my new Mazda all day Saturday! 4 gauge wiring, 12" sub, Alpine 5 channel (most likely), Crystals in the front doors, and possibly an Optima Red Top battery.