Yamaha DSP-A3090 Operation Manual page 33

ADDING A SUBWOOFER
You may wish to add a subwoofer to reinforce the bass
frequencies.
This unit provides line-level subwoofer outputs. If you use one
subwoofer, connect the MONO SUBWOOFER jack to the INPUT
jack of the subwoofer amplifier, and connect the speaker terminals of
the subwoofer amplifier to the subwoofer.
OUT
CENTER
Subwoofer system
MONO SPLIT
IN
SUB
WOOFER
If you wish to obtain more presence in your listening room, the
use of two subwoofers is recommended. To connect two subwoofers
to this unit, connect the "left" SPLIT SUBWOOFER jack to the INPUT
jack of the amplifier driving the left subwoofer, and the "right" SPLIT
SUBWOOFER jack to the INPUT jack of the amplifier driving the
right subwoofer, and then connect each subwoofer to the
corresponding amplifier.
MONO SPLIT
OUT IN
SUB
CENTER WOOFER
R
Subwoofer system
With some subwoofers, including the Yamaha Active Servo
Processing Subwoofer System, the amplifier and subwoofer are in
the same unit.
L
Subwoofer system
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