well, i'm presently using the two ports, labeled output, L & R just to the right of the subwoofer single output. i bought the twin cables from rat shack before the sub arrived. since the sub had two input ports on it, and there were two ports labeled output on the receiver, i figured they went there. i thought i could use either a single cable, or the twin supplied by ratshack. having just recently hooking up B speakers, this wasn't an issue. this weekend, i'll swap out the connection, and report back.
