Sennheiser MM450 Connecting the audio cable

Putting the MM 450 into operation

You can connect the headset to the audio source using the audio cable if

•you do not want to use the Bluetooth function,

•you are not allowed to use the Bluetooth function (some airlines do not allow Bluetooth transmission)

•the battery pack is flat.

	When the audio cable is connected to the headset, the
	Bluetooth function cannot be switched on.
1	If the headset is already connected to the audio source via the Bluetooth
	interface, the Bluetooth connection is automatically disconnected when
	you connect the audio cable. The Star LED flashes 3 times red and you
	hear a descending beep.

Connect the 2.5 mm jack plug of the audio cable to the socket of the headset.

Connect the 3.5 mm jack plug of the audio cable to

	– the headphone socket of your audio source or
	– the headphone socket of your audio source or
	– the audio adapter for 6.35 mm jack socket if the 3.5 mm jack plug
	of the audio cable is too small or
	– the in-flight adapter if you want to use the headset with an
	in-flight entertainment system.

1	When the audio cable is connected to your audio source, you hear the
	sound from your audio source and the Star LED flashes blue.
	Detaching the audio cable
	If you want to use the headset only as a Bluetooth headset or as a passive
	hearing protector, you can detach the audio cable .

Pull the 2.5 mm jack plug of the audio cable from the socket of the headset.

When detaching the audio cable, the Bluetooth function is not automatically switched on.