Single rear surround channel in a 6.1 system.
<a href="//commons.wikimedia.org/wiki/User:Stannered" title="User:Stannered">User:Stannered</a>
2007-03-08
<a href="https://en.wikipedia.org/wiki/Image:6_1_channels_surround_sound.png" class="extiw" title="en:Image:6 1 channels surround sound.png">en:Image:6 1 channels surround sound.png</a>