Play Blu-ray and DVDs with improved picture quality and 400W of audio output from this compact LG home cinema system
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What you need to know about Home Cinema
A watt is a unit of energy. With regard to audio systems, watts refer to the energy output of the amplifier or receiver that’s being used to power the speakers. More watts equals more power, and thus more potential volume—itself usually measured in decibels.
There are many surround sound formats available for the home, from 3-speaker setups, up to 7 or more speakers. The speaker configuration most common standard is known as 5.1 Surround Sound, which refers to the left, right, and center on the front and left surround speakers and surround-right in the back, plus an additional speaker low frequency.
Classic stereo uses nd" (Surround Sound) refers to a growing number of available formats, like Dolby two independent audio channels to play sound with depth and directionality. "Surround by 5.1 Surround Sound, using multi-channel audio to create an experience more immersive three dimensional sound through speakers strategically located further around the listener.
There is no set rule for deciding how powerful a sound system you need. Basic ballpark figures say at least 50 watts-per-channel for smaller rooms, and 100 watts-per-channel for larger rooms—and upwards of that for larger spaces. Your own ears are the best guide in making this decision.
Another thing to keep in mind when choosing home cinema components is that the relationship between watts and decibels is exponential, not linear. This means that doubling the wattage does not give you double the volume. As a rule, if you double the number of watts (for example, from 50 to 100) you only get a volume increase of 3dB, which is almost imperceptible.
To double the volume, you would instead need to multiply the number of watts by a factor of ten—requiring, for example, a 500-watt system to achieve twice the volume of a 50-watt system.
**Selected titles only
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DVD or Blu-ray players featuring 1080P up scaling can improve the picture quality of a Standard Definition (SD) DVD to that of Full High Definition (FHD) 1080P picture by using the HDMI connection and filling in the missing details. For the ultimate picture, a Blu-ray disc will provide all the detailed picture quality without the need for picture to be up scaled.
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