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| Audio output channels | 4.1 |
|---|---|
| Connectivity technology | Wired & Wireless |
| Audio format |
|
|---|---|
| Supported audio files |
|
| Subwoofer included | yes |
|---|---|
| Type of enclosure (sub) | Bass reflex |
| Subwoofer RMS power | 160.0 W |
| Subwoofer width | 8.7 in |
| Subwoofer depth | 11.06 in |
| Subwoofer height | 13.84 in |
| Subwoofer weight | 16.14 lb |
| Width | 33.07 in |
|---|---|
| Height | 1.38 in |
| Depth | 3.23 in |
| Weight | 3.42 lb |
| Built-in hard drive | no |
|---|---|
| Optical drive | no |
| Memory card reader | no |
| Analogue 3.5mm input | 1 |
|---|---|
| Analogue 5.1/6.1/7.1 inputs | no |
| Analogue RCA stereo inputs | 0 |
| Analogue RCA stereo outputs | 0 |
| Component input (YPbPr/YCbCr) | 0 |
| Component output (YPbPr/YCbCr) | 0 |
| Composite input | 0 |
| Composite output | 0 |
| Digital coaxial input (S/PDIF) | 0 |
| Digital coaxial output (S/PDIF) | 0 |
| Digital optical input (S/PDIF) | 1 |
| Digital optical output (S/PDIF) | 0 |
| HDMI | yes |
| HDMI ports quantity | 2 |
| Number of HDMI inputs | 1 |
| Number of HDMI outputs | 1 |
| Pre-output (subwoofer) | no |
| Subwoofer connectivity | Wireless |
| S-video input | 0 |
| S-video output | 0 |
| SCART out | no |
| USB | yes |
| USB 2.0 ports quantity | 1 |
| Wireless network (Wi-Fi) | no |
| NFC | no |
| Ethernet connection | no |
| Bluetooth | yes |
| Bluetooth profile | A2DP aptX |
| Bluetooth version | 3.0+HS |
| Audio Return Channel (ARC) | yes |
| Power per channel | 40.0 W |
|---|---|
| Signal separation | Broadband |
| Suitable for subwoofer | yes |
| Wireless | yes |
| RMS rated power | 320.0 W |
| Soundbar speaker RMS power | 40.0 W |
| Soundbase | no |
| Colour of product | Grey |
|---|
| Radio receiver | no |
|---|---|
| FM radio | no |
| Docking Station for mobile/Tablet | no |
| DLNA certified | no |
| 3D support (3D-Ready) | no |
| Wireless speakers included | no |
| Handheld remote control | yes |
| Separate DVD / Blu-ray player | no |
| Docking connector type | Not supported |
| Apple docking compatibility | no |
| Operational Power Consumption | < 30 |
|---|---|
| Power consumption (standby) | 0.5 W |
| Power consumption (typical) | 30.0 W |
LG's super-slim Bluetooth-ready soundbar is an absolute stunner, but is its sound quality equally attractive ?
The NB4540 is LG's second-tier sound bar and it combines looks and features with a decent audio performance.
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