So, what exactly does 3.1.2 Dolby Atmos mean? The numbers refer to the configuration of the speaker system:

Avoid hanging low chandeliers, ceiling fans, or pendant lights directly between the soundbar and your seating area. The Verdict: Is 3.1.2 Right For You?

You have two main paths for assembling a 3.1.2 Dolby Atmos system:

Unlike virtualized processing (which uses software tricks to fake height), physical 3.1.2 systems use dedicated hardware to push sound into the vertical plane, delivering a genuine sense of scale. Maximizing Your 3.1.2 Experience: Room Requirements

A single Subwoofer provides the deep "rumble" and bass needed for cinematic impact.

With all speakers physically in place, the final step is setting up your AV receiver (AVR). As a rule of thumb, the simpler the physical layout, the easier the setup process tends to be.

Provides flexibility in placement and deep, rich bass to enhance movies and music. Is a 3.1.2 Atmos System Right for You?