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Comparison LG SJ4 vs LG SJ5

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LG SJ4
LG SJ5
LG SJ4LG SJ5
from $229.99 
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Audio format2.12.1
Mount typeshelf / wallshelf / wall
Ultra HD (4K)
Tech specs
Rated power300 W320 W
Soundbar speaker power100 W120 W
Subwoofer
Wireless subwoofer
Acoustic designbass-reflex typebass-reflex type
Subwoofer power200 W200 W
Subwoofer dimensions (WxHxD)171х320х252 mm171х320х252 mm
Interfaces
Interfaces
Bluetooth
Bluetooth
Audio decoders
DTS
Dolby Digital
DTS
Dolby Digital
Connectors
Inputs
USB A
mini-Jack (3.5 mm)
optical
USB A
mini-Jack (3.5 mm)
optical
HDMI input1 pc1 pc
HDMI output1 pc1 pc
Speakers
Number of speakers6 шт6 шт
General
Control
remote control
TV remote control
from smartphone
remote control
TV remote control
from smartphone
Power consumption55 W
Dimensions (WxHxD)890х55х89 mm950x55x85 mm
Color
Added to E-Catalogjune 2017april 2017

Ultra HD (4K)

The ability of the projector to output a video signal in Ultra HD (4K) resolution — 3840x2160. This is the highest resolution used in modern consumer video equipment — 4 times higher than Full HD. However, note that this feature significantly affects the price of the projector, and to view such a video signal, you will need an appropriate screen. Therefore, it makes sense to specifically look for an UltraHD device only if you initially plan to connect it to a screen of the appropriate resolution.

This feature requires the projector to have at least one HDMI output (see below). In this case, the video signal source can be either an external device or the projector itself, operating in the format of a media centre (for example, a model with direct playback from USB media).

Rated power

The total power rating of the sound projector speakers (including subwoofer, if present).

This parameter is often used to estimate the overall sound volume of the device, but this is not entirely true. The fact is that the actual sound volume is determined mainly by the power of the main speakers of the sound projector, and the total power is the sum of this power and the power of the subwoofer. Therefore, models with the same power rating can vary markedly in actual volume: for example, a 150-watt soundbar with a 50-watt subwoofer will be louder than a 100-watt projector with a subwoofer of the same power, although in both cases the rated power will be equal to 200 watts.

Summing up, we can say that it is possible to evaluate the volume by rated power only if the sound projector is not equipped with a subwoofer — in such models, the rated power is equal to the power of the main speakers. In other cases, it is worth focus on the power of the soundbar and the power of the subwoofer directly stated in the characteristics (see below for both).

Soundbar speaker power

The nominal power of the speakers installed directly in the soundbar, excluding the subwoofer (in models with a built-in subwoofer, respectively, only the power of the main speakers is taken into account).

This indicator directly determines the overall volume of the sound projector; It is worth choosing according to this parameter taking into account the specifics of the room in which the projector is planned to be installed: the larger the room and the greater the distance to the viewer, the higher the power should be, otherwise the soundbar will not be able to effectively sound the scene. Detailed recommendations on the optimal power for different situations can be found in special sources.

Power consumption

The total power consumption of the entire system, both the sound projector itself and the external subwoofer (if present). Usually this indicator is indicated by the average power consumption at maximum volume. Note that on individual signal jumps, the actual power consumption may exceed the claimed one; in some cases (for example, when connected through a voltage stabilizer), this must be taken into account.
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