VIZIO SB4451-C0 vs LG SLM4R comparison definitely makes sense. Based on our rating, SB4451-C0 has a total rating of 7.2 out of 10 versus 5.2 for SLM4R. The competitors' control buttons are different: power, input, Bluetooth, volume down, volume up and power, volume down, volume up, function, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the VIZIO SB4451-C0 has 5.1 versus 4.1 for the LG SLM4R. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The VIZIO SB4451-C0 got our rating of 8 out of 10, and the LG SLM4R 7 for its audio features and specs. Spotify support is available on the SB4451-C0.
Only the VIZIO SB4451-C0 can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the SB4451-C0 supports HDMI Audio Return Channel (ARC). Both soundbars have a USB connector. For connectivity, the SB4451-C0 received a rating of 8/10 versus 6/10, respectively.
App control is available in every soundbar. None of the models under consideration have a built-in microphone. Multi-room is only available for the VIZIO SB4451-C0.
None of soundbars equipped with Dolby Atmos multichannel audio decoder. The soundbars do not support the surround sound technology DTS:X. For multichannel surround VIZIO SB4451-C0 got a rating of 4, and LG SLM4R 5 out of 10.