i would build a system simular to what luke81 mentioned, maybe for simplicity use a kenwood excelon 9140, and elimnate the sound processor and crossover as it is built in that unit, over power every speaker in the system and leave gains real low give huge head room. i probable would do 4 - 10's, get damn loud but reproduce all fq very accuratly. you could do a system like that for 5-6K