I like the sattelite speakers but i want much more of a bang out of the subwoofer....is there any way i can replace either the speaker in the box or get a whole new woofer but it needs to have all the plugs for all the speakers...u no wut i mean....also there is an unused yellow wire saying subwoofer on it can i plug that into a diff sub? if so which sub takes a regular headfone jack-type plug?