Yamaha RX-V992 Mode D'emploi page 38

Switching the IMPEDANCE SELECTOR switch on the
rear panel
Select the position whose requirements your speaker system
meets. Be sure to switch this only when the power of this unit is
turned off.
WARNING
Do not change the IMPEDANCE SELECTOR switch setting
while the power to this unit is on, otherwise this unit may
be damaged.
(Upper position)
Center: If you use one center speaker, the impedance of the
speaker must be 4Ω or higher.
If you use two center speakers, the impedance of each
speaker must be 4Ω or higher.
Rear: (U.S.A. and Canada models:)
The impedance of each speaker must be 4Ω or higher.
(Australia, Singapore and General models:)
The impedance of each speaker must be 6Ω or higher.
Main: If you use one pair of main speakers, the impedance of
each speaker must be 4Ω or higher.
If you use two pairs of main speakers, the impedance of
each speaker must be 8Ω or higher.
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C OR D
IMPEDANCE SELECTOR
C D
CENTER C OR D: 4ΩMIN./ SPEAKER
SET SPEAKER MODE
C D: 4ΩMIN./ SPEAKER
SET SPEAKER MODE
REAR : 4ΩMIN./ SPEAKER
MAIN A OR B: 4ΩMIN./ SPEAKER
A B: 8ΩMIN./ SPEAKER
CENTER C OR D: 8ΩMIN./ SPEAKER
SET SPEAKER MODE
C D: 4ΩMIN./ SPEAKER
SET SPEAKER MODE
REAR : 8ΩMIN./ SPEAKER
MAIN A OR B: 8ΩMIN./ SPEAKER
A B:16ΩMIN./ SPEAKER
(General model)
(Lower position)
Center: If you use one center speaker, the impedance of the
speaker must be 8Ω or higher.
If you use two center speakers, the impedance of each
speaker must be 4Ω or higher.
Rear: The impedance of each speaker must be 8Ω or higher.
Main: If you use one pair of main speakers, the impedance of
each speaker must be 8Ω or higher.
(Except Canada model:)
If you use two pairs of main speakers, the impedance of
each speaker must be 16Ω or higher.