Onkyo TX-L55 Instruction Manual page 17

Connecting Speakers —Continued
The following illustration shows which speakers should be connected to which terminals.
The SUBWOOFER PRE OUT should be connected to the
input on your powered subwoofer. If your subwoofer
doesn't have an amp built-in, you'll need to use an external
amp. See the manual supplied with your subwoofer for
more information.
Powered
subwoofer
LINE INPUT
SUB
WOOFER
PRE OUT
Surround Surround
Front Front
right left right left
speaker speaker
speaker speaker
LINE INPUT
Center Surround
speaker back
speaker
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