I have a tweeter, mid, mid bass, and a sub. My eclipse 8454 can send bandpass, but I dont have enough control to go active on every speaker. My JL 300/4 is killing me because the xover wont do bandpass. I am going to use a passive xover on my mid and tweet in my kick panel. I have two sets of passives to use (Infinity Beta and a MB Quart Q set). The slopes are fine and steep enoughon both, but the x over point is too low for my Infinity emit tweeters. I want to raise the point to 4500k or 5k. Who or how is the easiest way to change the xover point in the passives to use? I would rather use the MB quart set as it is bi amp capable. Is there a place or a person that I could send my sets to and have them change the points for me?