John, there are two ways to hookup and run a powered sub.
1. You can run speaker cables from the speaker outputs of the receiver to the sub's speaker inputs, and then run speaker cables from the sub's speaker outputs to your speakers. When hooked up this way, the crossover in the sub is active and does the separating of the signal.
2. Run a single subwoofer cable (RCA connectors at both ends of the cable) from the receiver's "sub out" jack to the "sub in" jack on the sub. Hooked up this way, the crossover in the receiver does the separating of the signal, and you should be sure the sub's crossover is turned to off and/or turned up to it's highest setting so as not to interfere with the receiver's crossover.
