Question: what is the difference between 3.1 and 5.1 surround sound?
Answer: The practical difference is that the extra two speakers in a 5.1 system provide surround channels, which localize sounds to your rear left and right. ... The 3.1 system consists of a center channel. A right and left front channel and a subwoofer. The 5.1 system also includes the right and left surround channels.