LG SP11RA 7.1.4 ch 770W Dolby Atmos® Sound Bar with Meridian & Surround Speakers. Since 1977, Meridian has delivered innovative and elegant high-performance audio solutions that have redefined how people enjoy their music and movies. As the pioneer of High-Resolution Audio and the master of Digital Signal Processing (DSP), they have played an integral role in the development and adoption of pioneering technologies.