Hi all im getting a sound system in my cordoba. Ive got a vibe monobox 4 amp which, if you dont know much about amps, is the dogs bo####ks. However, not too sure wat subwoofer i should get. Thinking of an vibe ac15 which is a bandpass box but would the bass be pushed to the front well enough? Or would a vibe space sub in a normal box sound better and push more air to the front? Ive never heard a bandpass box so dont know whether there loud. Help please!!!!