The left and right rear speakers create the surround sound effect. 5.1 surround sound ("five point one") is the common name for six channel surround sound audio systems. 5.1 is the most commonly used layout in home cinema. It uses five full bandwidth channels and one low-frequency effects channel.

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Taga Harmony TAV-607F, TAV-C, TAV-S 5.0 Ch Speaker Package - Jamsticks
Eltax Monitor Series 5.0 Ch Speaker Package - Jamsticks
Eltax Monitor Series 5.0 Ch Speaker Package - Jamsticks
Eltax Monitor Series 5.0.2 Ch Speaker Package - Jamsticks
Eltax Monitor Series 5.0 Ch Speaker Package. - Jamsticks
ELTAX Explorer 5.0 Speaker Package - Jamsticks
ELTAX Exposure 5.0 Speaker Package - Jamsticks
Q Acoustics 5.1 Speaker Package ( Q3010i, Q3050i, Q3090Ci ) - Jamsticks
Q Acoustics 5.0 Speaker Package ( Q3010i, Q3050i, Q3090 Ci ) - Jamsticks
Q Acoustics Q7000i 5.0 Ch Speaker Package - Jamsticks
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Taga Harmony TAV-506 V.2 5.0 Ch Speaker Package - Jamsticks
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Mission M³-Cube 5.1 Ch Speaker Package - Jamsticks
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Polk Audio TL1600  5.1 Speaker Package - Jamsticks
Q Acoustics 7000i 5.1 Ch Speaker Package - Jamsticks
Q Acoustics  3000 Series 5.1 Ch Speaker Package - Jamsticks