The M-Series 5.1 is the value crossover — full 5.1 channel layout plus virtualized Dolby Atmos/DTS:X at the lowest price among true 5.1 systems here. Vizio packed 9 drivers into the bar and includes a wireless subwoofer. The trade-off vs Polk Audio Signa S4 is that Vizio simulates height channels rather than driving them with upfiring speakers — fine for most movies, audibly weaker on aggressive Atmos mixes. Best buy when on sale below $250.
Strengths
- +5.1 channel layout with wireless subwoofer included
- +Dolby Atmos and DTS:X support via virtualization
- +9-driver array with separate tweeters and woofers
- +Slim profile docks with Vizio TV stands for low-clutter setup
- +Most aggressive value pricing in this round-up's 5.1 tier
Watch-outs
- −Virtualized (not native) Atmos — height effects are simulated, not real
- −5" subwoofer is smaller than the Samsung HW-B750D's larger driver
- −Vizio's software ecosystem (SmartCast) lags Samsung and Polk in features
- −Less established service network than Samsung, Polk, or Yamaha
How it compares
Matches the Samsung HW-B750D on 5.1 channel count at a lower price. Loses to the Polk Audio Signa S4 on real (vs virtualized) Atmos. Beats the Yamaha SR-B40A and Polk Audio Signa S2 on channel count, which are 2.1 configurations.
Who this is for
At a glance: value buyers who want a 5.1 layout with simulated Atmos and don't mind virtualized rather than physical height drivers.
Why you’d buy the VIZIO M-Series 5.1 (M51ax-J6)
- 5.1 channel layout with wireless subwoofer included.
- Dolby Atmos and DTS:X support via virtualization.
- 9-driver array with separate tweeters and woofers.
Why you’d skip it
- Virtualized (not native) Atmos — height effects are simulated, not real.
- 5" subwoofer is smaller than the Samsung HW-B750D's larger driver.
- Vizio's software ecosystem (SmartCast) lags Samsung and Polk in features.
Rating sources
Our 4.3 score is the average of these published ratings. More about methodology.
