Platin Monaco 5.1 Review: Surround Sound System | WIRED
Using 5.1-channel system
5.1 surround sound - Wikipedia
5.1 Surround Sound vs. 7.1 Surround Sound
Sonos Arc 5.1.2 Home Theater Bundle (Black Arc, White Sub/Surrounds) Includes Sonos Arc Dolby Atmos® sound bar, Gen-3 Sub, and two Sonos One SLs at Crutchfield