You are ready to shop for the speakers for your home theater and you have been browsing online for ideas, but all you see are a bunch of numbers like 2.0, 5.1 and 7.1 after the speaker name. What does it all mean?
Here is a short guide to help you understand what all the numbers mean.
2.0 - Normal Stereo
You know, the one with a right and left channel. This is just surround sound geek speak for normal stereo.
5.1 - Primary Surround Sound
Primary format for creating and delivering surround sound. Most widely used format in use today. Source signals have five main channels and one LFE (low frequency effects) bass channel.
Played back with 5 speaker arranged optimally for surround sound with one sub-woofer included.
5.1 - Channel Ready
Has six separate inputs that accept a 5.1 signal from a source such as a DVD player. Does not necessarily decode the signals to a 5.1 channel output. More research on the product has to be done to determine that.
6.1
Has an additional channel called the "back surround channel". This drives a speaker that is placed directly behind the listener for the same smooth sound that comes from the center front speakers.
7.1
Two back channels for extra rear sound effects
8.1 and so forth
9.1, 10.1, 10.1 ad nauseum. Just extra bang for a higher buck. Reserved for the surround sound aficionado that can actually tell the difference (or so they say).
In general the first number refers to the number of speakers or audio channel coming in and the second number refers to whether the system has a sub-woofer or a low frequency effects channel. 1 means yes 0 means no.
Now you should be somewhat prepared to discuss speakers and surround sound with the salesperson at the electronics store.
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