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Text excerpt from page 14 (click to view)
Customizing your receiver
SPEAKERS A, B
For front speakers with an impedance under 6 �
Turn �LOW IMP� on if even one of your speakers has an impedance under 6 �.
Press and hold [A] or [B] until �LOW IMP� lights up on the display.
Press and hold down again to cancel �LOW IMP�. Note that when �LOW IMP� is on, SPEAKERS A and B cannot be used at the same time.