Help Guide | Installing 7.1-channel speaker system using surround back speakers
How to Set up and Calibrate Surround Sound Speaker Systems (5.1, 6.1, 7.1) | Surround sound living room, Home theater surround sound, Surround sound speakers
7.1 Virtual Speaker Setup - Dolby
5.1 or 7.1: Which sound system is right for you? | Teufel blog