Yamaha DSP-A1092 Owner's Manual page 28

CONNECTING THE MAIN SPEAKERS TO THIS UNIT
One or two sets of MAIN speakers can be connected to this
unit.
If you use two sets of MAIN speakers, connect one set to the
MAIN SPEAKERS A terminals, and connect another set to the B
terminals. If you use only one set of MAIN speakers, connect them
to either the MAIN SPEAKERS A or B terminals. Make sure that
the jumper bars between the PRE OUT and MAIN IN jacks on the
rear panel are in place.
It is also possible to use an external power amplifier if more
power is desired. In this case, remove the jumper bars and
connect the PRE OUT jacks to the INPUT jacks of a stereo power
amplifier with a stereo pin cable—making sure to connect the left
and right channels correctly. Connect the MAIN speakers to the
speaker output terminals of the power amplifier.
Set the SPEAKERS switch A or B (or both A and B) on the
front panel corresponding to the main speakers you will use to the
ON position. Set the switch for the main speakers you will not use
to the OFF position. Selected main speakers are shown by the
lighting of "SPEAKERS A" and/or "SPEAKERS B" on the display
panel.
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Main speaker A
Power amplifier
This unit
Main speaker B
Main speaker A
INPUT
PRE OUT
Main speaker B