During use…

What do I need to do to get the best experience once I unbox my new CX True Wireless?

Answer:

•Wake up and charge the earbuds by placing them into the charging case (don't forget to remove protection film before put­ting earbuds back) and connecting the USB-C cable.

•Select the correct ear adapter from a selection of four sizes (XS, S, M, L). Choose the ear adapter size that provides a very good seal in order to enjoy the best possible audio experience.

•Twist the earbuds slightly into your ear for perfect and secure fit.

•Pair the earbuds with your smartphone. The Bluetooth pairing mode is activated automatically once you first activate the ear­phones. Alternatively, you can manually activate pairing mode by pressing both touchpads for at least 3 seconds. In the Bluetooth menu of your smartphone, select "CX True Wireless".

•A voice prompt will inform you once the pairing has been com­pleted successfully.

•Download the Sennheiser Smart Control app from your app store to personalize your CX True Wireless experience.

•For further information and support, consult the supplied quick guide or online user manual, downloadable from Sennheiser web­site.

 

How can I control the sidetone during calls?

Answer:

For comfortable calls the CX True Wireless  has an integrated sidetone feature. "Sidetone" is the term given to the sound that is generated when a user hears their own voice in their own earbud. The sidetone feature enables a natural experience of hearing one's own voice when speaking during a call (own voice reception).

You can enable and adjust or disable the sidetone in the Smart Con­trol app's device settings.

 

What should I check or adjust to make sure the sound is at its very best?

Answer:

The CX True Wireless has been created to provide exceptional sound performance, thanks to  TrueResponse Transducers technology, the internal audio EQ and latest high-quality Bluetooth codecs.

However, to experience this sound to the full, it is essential to cor­rectly place the earbuds in the ear-canal and to choose the best-fit­ting ear adapter set. The CX True Wireless comes with four sizes of ear adapters (XS, S, M, L) included in the box. The CX True Wireless quick guide explains precisely how to twist the earbuds into your ears to form a perfect seal within the ear-canal.

Please note that the sound may have been adjusted using the EQ function of the Smart Control app. To see if this is the case, connect to the Smart Control app and check the equalizer settings to ensure the desired sound.

 

What settings are recommended to get the 9-hour battery life that's specified?

Answer:

The specified battery time of 9 hours has been confirmed for music listening under the following conditions:

•CX True Wireless earbuds fully charged for at least 1.5 hours

•iPhone within 1-meter distance

•Bluetooth AAC codec

•Volume level set to 50%

•No customized EQ

The battery time may differ under different operating conditions.

 

How do I check for, receive and install firmware updates?

Answer:

When using the Sennheiser Smart Control app, you will receive a notification once a new firmware release is available. The app will guide you through the update process. The firmware update will be installed over-the-air via the Bluetooth wireless connection.

Additionally, you can check for the current firmware release status in the Smart Control app's settings.

 

Do the earbuds switch off automatically when not in use?

Answer:

The CX True Wireless has integrated power-saving features. When the earbuds are disconnected from a Bluetooth source and not in use, they will switch off automatically after 15 minutes.

To turn the earphones on again, press each touch pad for more than 2 seconds.

You can change the time to automatically turn off the earbuds within the Sennheiser Smart Control app.