Posted 14 May 2008 - 05:16 PM
The first digit is the number of speaker channels, the second (after the .) indicates a subwoofer/effects channel.
So 2.0 is a standard speaker pair, 2.1 is a speaker pair with sub, 5.1 is surround (L & R Front, Centre, L & R Rear, Sub).
If you just want to listen to music, get a good quality 2.1 setup, try to listen to some in action before choosing as different speakers will vary quite a bit in sound.
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