I currently have one Kicker 15"L7 in a ported box powered by a Kicker KX1200.1 and I am thinking of adding my two extra subs( Sony 12" Xplod XSL123P5B). Will there be any cancellation if I run the 15" at frequencies of 100Hz and below and run the 12"s at 100Hz and above? The 12"s will probably...