Yamaha YST-SW515 Owner's Manual page 9

If your amplifier has only one set of front speaker output terminals.
Connect the speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer, and connect the
OUTPUT terminals of the subwoofer to the front speakers.
■
Using one subwoofer (with speaker cables)
Right front speaker
Subwoofer
To AC outlet
■
Using two subwoofers (with speaker cables)
Right front speaker
Subwoofer
To AC outlet
Speaker output
terminals
Speaker output
terminals
CONNECTIONS
Left front speaker
Amplifier
Left front speaker
Subwoofer
Amplifier
To AC outlet
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