I'm running an external power amp slaved out of my 400+, to my 18 sub (400+ into 6x10). I'm thinking of trying a crossover to dived the range up a bit. Since I'm playing in low A, I worry about my tens getting destroyed again. This is my theory: Keeping the 40hz eq relatively low to protect the tens, and a crossover in line to the poweramp so the 18 dosen't see anything over 100hz or so. There is more than enough power going to the 18, so even if the signal from the preamp is cut a bit there is still tons of headroom to work with. How does this sound, will an active crossover accomplish what I want it to do? Is it a bad idea to split the freq's in the cabs? Should I eat more bran to stay regular?