Sennheiser M3AEBTXL Instruction Manual page 27

Use the audio cable when:
•wireless transmission is not allowed, e.g. during aircraft take-off and landing,
•the headphone's rechargeable battery is flat,
•your audio source doesn't offer a Bluetooth connection.
The functions for controlling music and/or calls or voice assistance are not possible. The active noise
cancellation ANC can be fully used provided that the rechargeable battery is charged.
You can also activate the flight mode without connecting an audio cable to the headphones
(> Unfolding the ear cups without switching the headphones
Connecting the headphones using the audio cable
▷
Connect the 2.5 mm jack plug of the audio cable to the headphones' audio socket until it clicks into
place. Secure the audio cable by turning the jack plug clockwise.
The flight mode is activated and the Bluetooth connection is deactivated.
▷
Connect the 3.5 mm jack plug to the audio output of your smartphone.
To disconnect the audio cable:
▷
Turn the jack plug counterclockwise and carefully pull it off.
Connecting the headphones using the USB cable
When you connect the headphones to a Mac/PC/mobile device using the supplied USB cable, you can
play audio content from your Mac/PC/mobile device directly through the headphones.
The headphones are automatically charged when you connect
them to a Mac/PC/mobile device using the USB cable.
If you are using the USB cable and want to deactivate all wire-
less connections, you have to deactivate Bluetooth on the
headphones (> Switching the headphones on without Bluetooth
wireless connection (flight mode)).
on).
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