I have a pretty basic question: I've got a Klipsch Sub 10 Subwoofer with an LFE input that has a right and a left channel input. I've just discovered that my Monster cable that accommodates this is breaking. But I can't find online any cables that have a single output from the receiver and a dual input into the subwoofer. Do I really need the dual input? It seems odd since there is no separation between a right and left channel out of a single speaker. I don't know what kind of cable I really need to replace my defective cable with. Your advice is much appreciated.