Now I have no idea what you're saying. The RCA inputs on your sub are useless in this case. Just run the speaker outputs of your receiver to the speaker inputs on your sub. Then, I suggest you run your main speakers from the speaker outputs on your sub. As to why, I covered that in an earlier post here.
But, if it makes you feel better, jist do what you said in post # 17.
that should pretty much cover everything, no?