well my subwoofer fund for a 15 went up to the 300-350 range cuz i dont wana be dissapointed, and i was wanting to know which would sound better and still have mad bass between the aq hdc3 and the fi bl ran off a hifonics 1600d? in a box at 4cubes and hopefully 32hz if not 30hz. and input will be greatly appreciated thnx in advance ~Bill