If your cable run to rear center is long and running twice the cable is too expensive, you may want to connect one speaker to the 1050 and connect the second speaker to the first. When you connect the two speakers together, make sure you connect the positive terminals to each other and the same for the negative terminals. This is still a parallel wiring configuration, and it uses a lot less wire. Additionally, if you use decent speaker wire, there shouldn't be any real difference between wiring your speakers this way and the method Owl's_Warder suggested.