Yamaha DSP-A1092 Owner's Manual page 31

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
Never switch the setting of this switch when the power of
this unit is on, otherwise this unit will break down.
(Upper position)
Center: If you use one center speaker, the impedance of the
speaker must be 4 or higher.
If you use two center speakers, the impedance of each
speaker must be 4 or higher.
Rear: The impedance of each speaker must be 4 or higher.
Main: If you use one pair of main speakers, the impedance of
each speaker must be 4 or higher.
If you use two pairs of main speakers, the impedance of
each speaker must be 8 or higher.
Front effect:
The impedance of each speaker must be 6 or higher.
IMPEDANCE SELECTOR
CENTER C OR D: 4 MIN./ SPEAKER
CENTER C OR D: 8 MIN./ SPEAKER
(Europe model)
(Lower position)
Center: If you use one center speaker, the impedance of the
speaker must be 8 or higher.
If you use two center speakers, the impedance of each
speaker must be 4 or higher.
Rear: The impedance of each speaker must be 8 or higher.
Main: If you use one pair of main speakers, the impedance of
each speaker must be 8 or higher.
If you use two pairs of main speakers, the impedance of
each speaker must be 16 or higher.
Front effect:
The impedance of each speaker must be 8 or higher.
SET SPEAKER MODE
C D: 4 MIN./ SPEAKER
SET SPEAKER MODE
REAR 4 MIN./ SPEAKER
MAIN A OR B: 4 MIN./ SPEAKER
A B: 8 MIN./ SPEAKER
FRONT EFFECT: 6 MIN./ SPEAKER
SET SPEAKER MODE
C D: 4 MIN./ SPEAKER
SET SPEAKER MODE
REAR 8 MIN./ SPEAKER
MAIN A OR B: 8 MIN./ SPEAKER
A B: 6 MIN./ SPEAKER
FRONT EFFECT: 8 MIN./ SPEAKER
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