Yamaha DSP -A780 Operation Manual page 17

ADDITIONAL INFORMATION ON CONNECTING
SPEAKERS
(for Europe, U.K. and Australia models)
This unit is equipped with line output jacks for main, rear effect
and center channels.
If you will use an external power amplifier for driving main
speakers, connect input jacks of the external power amplifier to the
MAIN OUTPUT jacks of this unit. (See Figure.)
For connecting an external power amplifier for driving rear effect
speakers or center speaker to this unit, connect it to the
corresponding line output jack(s) (REAR OUTPUT or CENTER
OUTPUT) of this unit in the same way. (See Figure.)
NOTE: Even if an external power amplifier is connected to the MAIN,
REAR or CENTER OUTPUT jacks, the corresponding internal
amplifier will not be turned off and output will be available at the
speaker terminals.
Power amplifier
MAIN
REAR
L R
Rear effect speakers
Main speakers
L
OUTPUT
Power amplifier
Monaural power amplifier
CENTER
LOWPASS MAIN
LEVEL
- I0dB 0dB
fc:200Hz
Center speaker
R
15