Speaker B System
With a 7.1 channel system (P8), you can connect one more
set of front speakers to use as a Speaker B System. In this
state, the 7.1 channel system becomes the Speaker A
System and you can switch the same audio to output from
A, B, or A+B. Press on the remote control (P6) and use
"Other" - "Speakers" to switch. Note that no sound is played
from the surround back speakers when playing from A+B.
0 "Speaker combinations" (P14) introduces some detailed
examples of speaker combinations.