Hey guys. I had an idea for a friend. A small 6.5 inch high xmax subwoofer. I had seen the anarchy tapped horn sub with a tang band in it. Is there a better setup for non equalized subwoofer with only a x over set to say 100-90Hz. Planing on only using a 12 volt 700+ cca battery used to power a car amp pushing 100w rms. Looking for high output and low power consumption. Thanks!