Just a couple of questions on how to get the most out of this rig. First of all, what is the purpose of the crossover knob and when do you use it? Also when using two cabs (both 8 ohms), whats the best way to hook them up? (i own the 410XLT, 210XLT, 115XLT) One cab to left amp out and the other to right amp out? Are there other alternatives to hooking up multiple cabs? By the way, I'll be getting the Navigator Preamp and the WT-1000 Power amp and I wanna know how to get the best out of this rig as well. Same questions apply so all who have knowledge of Eden gear PLEASE respond.