37.4 in 2.8 in  | 35.04 in 2.17 in  | |
| Available colors | ||
| User rating |
 LG SJ3 |  LG SJ4 | |
|---|---|---|
| Audio output channels | 2.1 | 2.1 |
| Connectivity technology | Wired & Wireless | Wired & Wireless |
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Analogue 3.5mm input | 1 | 1 |
| Digital optical input (S/PDIF) | 1 | 1 |
| HDMI | no | yes |
| USB | yes | yes |
| USB 2.0 ports quantity | 1 | 1 |
| Wireless network (Wi-Fi) | no | yes |
| NFC | no | no |
| Ethernet connection | yes | yes |
| Bluetooth | yes | yes |
| Bluetooth version | 4.0 | 4.0 |
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Audio format |
|
|
| Supported audio files |
|
|
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Automatic calibration (w/ measurement mic.) | no | no |
| Power per channel | 50.0 W | 60.0 W |
| Suitable for subwoofer | yes | yes |
| Wireless | yes | yes |
| Impedance | 4.0 Ω | 4.0 Ω |
| Number of speaker drivers | 6 | 4 |
| Signal-to-Noise Ratio (SNR) | 82.0 dB | 82.0 dB |
| RMS rated power | 300.0 W | 300.0 W |
| Soundbar speaker RMS power | 100.0 W | 120.0 W |
| Soundbase | no | no |
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Colour of product | Black | Black |
| Width | 37.4 in | 35.04 in |
| Height | 2.8 in | 2.17 in |
| Depth | 1.85 in | 3.35 in |
| Weight | 5.45 lb | 5.29 lb |
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Subwoofer included | yes | yes |
| Type of enclosure (sub) | Bass reflex | Bass reflex |
| Subwoofer RMS power | 200.0 W | 180.0 W |
| Subwoofer impedance | 3.0 Ω | 3.0 Ω |
| Bass reflex | yes | yes |
| Subwoofer width | 6.73 in | 6.73 in |
| Subwoofer depth | 9.92 in | 9.92 in |
| Subwoofer height | 12.6 in | 12.6 in |
| Subwoofer weight | 9.26 lb | 9.26 lb |
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Colour of product | Black | Black |
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Radio receiver | no | no |
| FM radio | no | no |
| 3D support (3D-Ready) | no | no |
| Wireless speakers included | no | no |
| Remote control app for mobile / tablet | yes | yes |
| Handheld remote control | yes | yes |
| Separate DVD / Blu-ray player | no | no |
| Docking connector type | Not supported | Not supported |
| Apple docking compatibility | no | no |
| Night mode | yes | yes |
| TV stand usage | yes | no |
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Optical drive | no | no |
| LG SJ3 | LG SJ4 | |
|---|---|---|
| Power consumption (typical) | 27.0 W | 22.0 W |
| Pros | ||
|---|---|---|
| Cons |
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