Types Audio cable Types Audio cable Step 1: Using the 3.5mm audio cable we provided to connect your TV to the adapter(In TX mode). Long press the power button of the adapter TX mode), then turn on the Bluetooth headset and put it together. After the pairing is successful, you should be able to hear your TV through the headset. Step 2: If not, check your TV settings to make sure that the TV speaker has been set toe headset.