Sound Bar/Rear Speakers from Dish

Hey everyone,
We just purchased the Polk surround system through Dish - the sound bar, wireless rear speakers, and subwoofer. (DSB1, DSB2, DSB3) Is it possible for the rear speakers to play the same sound as the sound bar instead of surround sound? The "guide" that came with the equipment is really just a sheet of paper with instructions for set-up and I can't seem to find anything online. Any help or suggestions would be appreciated!