Here are the steps to connect a JBL soundbar to the subwoofer via Bluetooth.
The JBL 3.1 soundbar comes with an external Bluetooth speaker that is responsible for the reproduction of low frequencies sounds (the subwoofer). Like other devices that use wireless communication technology, it will need a pairing process for the first time.
How to pair a JBL soundbar with the Bluetooth subwoofer
Plug both, the soundbar and the subwoofer, into the wall.
On the subwoofer back, touch the PAIRING button for a couple of seconds (the LED will switch from emitting a steady orange light to emitting a white flashing light).
On the soundbar’s remote control, press the DIM DISPLAY button for 5 seconds, and release it. Press the buttons Bass + and immediately after the Bass –.
The soundbar will enter in pairing mode and display the PAIRING message. As soon as the connection stablish, it will post the CONNECTED message. The led on the back of the subwoofer should now emit a steady white light.
What to do if subwoofer not pairing up
Unplug both the soundbar and subwoofer from power for a couple of minutes. Then plug them back in.
Press the pairing button on the subwoofer until the LED starts to flash rapidly. Press the DIM DISPLAY button for 5 seconds and release it. Press the plus button (BASS) and then the minus button.
Pairing will start. Once finished, the bar should display the CONNECTED message and the subwoofer led will emit a steady white light.