Yamaha A-S501 Owner's Manual page 9

0 VOLTAGE SELECTOR (General model only)
Used to set to your local main voltage (see page 10).
A IMPEDANCE SELECTOR switch
CAUTION
Do not change the IMPEDANCE SELECTOR switch
while the power is turned on, as doing so may damage
the unit.
If the IMPEDANCE SELECTOR switch may not be
fully slid to either position, remove the power cable
and slide the switch all the way to either position.
Select the switch position according to the impedance
of the speakers.
Speaker Speaker
connection impedance
6 Ω or higher
SPEAKERS A
or
4 Ω or higher
SPEAKERS B
SPEAKERS A
8 Ω or higher
and
SPEAKERS B
6 Ω or higher
Bi-wiring
4 Ω or higher
B AC IN (A-S701)
Used to connect the supplied power cable to an AC
wall outlet (see page 10).
Power cable (A-S501/S301)
Used to connect this unit to an AC wall outlet
(see page 10).
Switch
position
HIGH
LOW
LOW
HIGH
LOW
CONTROLS AND FUNCTIONS
(A-S501/S301)
(A-S701)
5
En