Morning All! I just picked up a Marantz NR1605 Receiver and the Definitive Technology ProCinema 600 speaker set. Last night I got the fronts, center, and surrounds all nicely hooked up and was about to work on the subwoofer when I realized a problem. The subwoofer output on my receiver is RCA and the inputs on my sub are standard speaker inputs. Am I **** out of luck and need to return the speakers?