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Using the headphones
24 | MOMENTUM 4
Information on active noise cancellation
ANC
Due to its closed design, the headphones offer effective passive iso-
lation from ambient noise.
In addition, the headphones have an active noise cancellation (ANC)
function, which allows you to reduce ambient noise to a minimum.
Even when ANC is activated, your headphones' sound quality is
always at its best.
You can activate or deactivate ANC when the headphones are con-
nected to your audio source via Bluetooth or via the audio cable/USB
cable (provided that the battery is sufficiently charged).
If you want to create a quiet space in a noisy environment, you can
simply use the headphones – without connected cables and without
Bluetooth devices – as noise protection by using ANC (> 26).
With the Smart Control app, you can select different ANC modes that
provide the optimal settings for your application/situation.
Notes on active noise cancellation
• Continuous and low-frequency noise, such as motor or fan noise,
is particularly well suppressed.
• Speech or high-frequency noise is significantly reduced, but can
remain perceptible.
• In very quiet environments, slight noise may occur. In this case,
deactivate ANC.
• If unusual (whistling or beeping) noise occurs, take the head-
phones off and put them on again. Make sure that the ear cups
properly fit around your ears.
• To avoid loud, unusual (whistling or beeping) noise and to ensure
proper noise cancellation, do not cover the microphone openings
of the active noise cancellation circuitry located on the outside of
the ear cups.
Information on the Transparency Mode –
Listening to ambient sounds or
conversations
With the Transparency Mode activated, you can hear ambient
sounds or communicate without having to remove the headphones.
This allows you to hear e.g. announcements in the train or aircraft or
to have short conversations.
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