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Sennheiser PXC 550-II Wireless [21/38] Information on active noise cancellation anc

Using the headphones

PXC 550-II | 21

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 and your

audio source are connected via Bluetooth, the USB cable, or the

audio 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 cable and disconnected from

any Bluetooth device – with ANC activated (>

31).

The Smart Control app allows you to select different ANC modes that

offer the optimal settings depending on the application/situation.

For example, low-frequency noise can be suppressed, wind noise

can be minimized or a possible feeling of pressure on the ears can be

avoided.

Notes on active noise cancellation

• Continuous uniform noise, such as motor or fan noise, is particu-

larly 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.

Activating/deactivating the active noise

cancellation ANC

To activate the active noise cancellation ANC:

▷ Slide the ANC switch to the position:

– “I” (middle switch position): adjustable ANC mode “USER” (>

23);

– “II” (lower switch position): maximum ANC mode “MAX”.

To deactivate the active noise cancellation ANC:

▷ Slide the ANC switch to the upper position “0”.

Sennheiser PXC 550-II Wireless [21/38] Information on active noise cancellation anc

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