So I brought this sub for a guy along with an amp... It is a ppi flat piston 12' sub and there are two in a ported box. I cannot figure out why the last guy wired it up like this... + and - from channel one of the sub to the left port, + and - from channel one on the other sub to port on the left... And + and - from channel two from sub one to the right port and + and - from channel two on sub two to the right port... I have never seen it hooked up this way before and am very confused about it.... What happens when it is wired like this? Would it be better to wire channel one and two on sub one to the left port and channel one and two on sub two the right port?