Yamaha RX-797 Benutzerhandbuch

Plug the power cable into the AC IN on the rear panel of 
this unit and then plug the power supply cord into the AC 
wall outlet after all other connections are complete.

■ COUPLER jacks

Removing the jumper pins from the PRE OUT/MAIN IN 
jacks enables this unit to operate separately as a control 
amplifier or a power amplifier. These jacks are used to 
connect a signal-processing system such as a graphic 
equalizer or a surround-sound processor to this unit. If 
such an external unit is connected to these jacks, the 
VOLUME control of this unit can be used to adjust the 
overall sound output level.
To connect an external unit, first remove the jumper pins 
from the PRE OUT/MAIN IN jacks and then connect the 
input jacks of that external unit to the PRE OUT jacks or 
its output jacks to the MAIN IN jacks. For details, refer to 
the owner’s manual included with the external unit to be 
connected.

• When you do not use the COUPLER jacks, never remove the 

jumper pins from these jacks. If removed, no sound will be 
output from this unit.

• When you use this unit with an external unit connected to the 

COUPLER jacks, make sure that the CD DIRECT AMP button 
and the PURE DIRECT button on the front panel are turned off.

• When you use this unit as a power amplifier, connect the output 

jacks of an external control amplifier, etc. to the MAIN IN jacks 
of this unit. In this case, the controls of this unit will not 
function except the PHONES jack and the SPEAKERS A/B 
buttons. Use the controls on the external control amplifier to 
make volume adjustments, etc.

■ AC OUTLET(S) (SWITCHED)

Australia model ......................................................1 outlet
Other models .......................................................  2 outlets
Use these outlets to connect the power supply cords from 
your other components to this unit. The outlets supply 
power to any connected components whenever the power 
of this unit is turned on. For information on the maximum 
power (total power consumption of components), see 
“SPECIFICATIONS” on page 49.

■ VOLTAGE SELECTOR

VOLTAGE SELECTOR on the rear panel of this unit must 
be set for your local main voltage BEFORE plugging the 
power supply cord into the AC wall outlet.
Voltages are as follows:
Asia model .........................  AC 220/230–240 V, 50/60 Hz
General model......  AC 110/120/220/230–240 V, 50/60 Hz

■ IMPEDANCE SELECTOR switch

Do not slide the IMPEDANCE SELECTOR switch while the 
power of this unit is turned on, as doing so may damage the unit.

Select the switch position (left or right) according to the 
impedance of the speakers in your system.

• The Canada model cannot use two separate speaker sets (A and 

B) simultaneously when the IMPEDANCE SELECTOR switch 
is slid to the 6 

Ω

 position.

• If this unit fails to turn on, the IMPEDANCE SELECTOR 

switch may not be fully slid to either position. If this is the case, 
slide the switch all the way to either position when the power 
supply to this unit is completely cut off.

Ω

Ω

Ω

If you use one set (A or B), the impedance of 
each speaker must be 6 

Ω

 or higher.

If you use two sets (A and B), the impedance 
of each speaker must be 12 

Ω

 or higher.

If you use one set (A or B), the impedance of 
each speaker must be 4 

Ω

 or higher.

If you use two sets (A and B), the impedance 
of each speaker must be 8 

Ω

 or higher.