The Art of Installing Surround Sound Speakers: Elevate Your Home Theater Experience - VAIL Audio
Sony Centre UK - 5.1ch Home Cinema with Wireless Rear Speakers | HT-S40R
Sony | HT-S40R | 5.1ch Home Cinema with Wireless Rear Speakers - YouTube
For 5.1.2, Dolby recommends placing the surround speakers behind the listening position. Why? Wouldn't it be better to have them next to the listening position as recommended in a 7.1 setup? :
Surround Placement | nsmt loudspeakers
Home Theater Speaker Placement - Auralex Acoustics