subwoofer connect question

I would like to integrate my Rythmik L12 subwoofer to my Yamaha RX-770 receiver.  the Yamaha has pre-out/main in with left & right rca's connected with jumpers.  would I just use the left & right pre-out to the subwoofer left & right rca's in? if so should I then take a jumper and place it in the left & right of the main in on the Yamaha?