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5.1
(Also 6.1, 7.1) - (Five-point-One) - Used in various formats in regard to surround sound. http://en.wikipedia.org/wiki/5.1
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5.1
(Also 6.1, 7.1) - (Five-point-One) - Used in various formats in regard to surround sound. http://en.wikipedia.org/wiki/5.1
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