Buy 4 Digmoda Ice power based amplifier with DSP signal processing, can be configured in a number of different variations. A DDC1000 for the woofers and a DDC552 for the mid woofers midrange and tweeter per speaker. The 552 is a 3 channel with 2ea 500W modules and a 250W module, the DDC1000 is a single 1000W module. Then - go to town with you laptop and play around with slopes / crossover points etc. the software is very easy to use and understand. A much better solution than any active crossover. Google them for more information
Best of luck
Peter
Best of luck
Peter