Press the surround button on the remote. When the DTS 3D effect is on the surround light on the soundbar will be blue. When the light is green then you have regular surround playback. Neither is going to be like real surround sound but might as well try it. Might work well on some content and not so well on other.
Well, problem is, soundbars don't do REAL surround, they do a fake surround, a virtual surround they call it. I've heard a real surround system and I know how that sounds and can compare, but if u haven't heard a real surround before, you would have no point of reference.