ok, i got a big new rig, it consist of SWR goliath jr 2x10, a yamaha 1x18 cab, a yamaha 500+500 power amp, a yamaha crossover, and gemini power conditioner. im using the korg AX1B as a preamp since i dont have a rack one yet, cause im in uruguay and the there is little market on pro gear. im planning to go to argentina to get a swr grand prix..... the thing is that i never used a crossover so i dont know how, i know the theory but not the practic. the kbobs are 3 band atenuator, a general attrenuator, a 3way switch (2way-1 / 2way-2 / 3 way) and 4 frequencys knobs. the 1st 2 i can choose from 200 to 1.5 K Hz and the 2nd 2 from 1.5K to 8K Hz..... wich would be the proper setng to get the maximun performance out of my rig?