Harman Kardon CITATION SUB Owner's Manual page 10

Speaker Setup
On the touch screen of your CITATION BAR / TOWER, press
"Speaker Setup" > "Pairing" > "Subwoofer pairing" and follow
the on-screen instructions to complete the setup.
To remove the setup, press "Subwoofer pairing" on the touch
screen of your CITATION BAR / TOWER again and follow the
on-screen instructions.
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