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.

On sale
Taga Harmony TAV-607F, TAV-C, TAV-S 5.0 Ch 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
On sale
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