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CX True Wireless  |  9

In this case to the following steps are necessary to establish a full 
Bluetooth connection:

Put both earbuds into the charging case

Enter the Bluetooth menu of your smartphone

Delete/Unpair all entries "CX True Wireless" (and "LE-CX True 
Wireless" if available) in the list of paired devices

Switch off Bluetooth and activate Bluetooth again on your smart-
phone (Alternatively: Reboot your smartphone)

Take both earbuds out of the charging case

Enter pairing mode manually by pressing both earbud touch pads 
for at least 3 seconds (Pairing mode is indicated by blue/red alter-
nating LED indicator on earbuds) 

Enter the Bluetooth menu of your smartphone and select entry 
"CX True Wireless"

The CX True Wireless will now be paired and connected with 
Bluetooth audio 

It is recommended to first establish the Bluetooth audio connection 
before then connecting the Sennheiser Smart Control app. This 
avoids potential issues with certain smartphones.

What should I check if I can’t hear anything when using the ear-
buds?

Answer: 

Make sure that the earbuds are charged and connected to your Blue-
tooth device. Check that the Bluetooth settings of your connected 
device have media and calls connection activated. 

Additionally, make sure the earbuds are inserted into your ears cor-
rectly. Increase the volume on your Bluetooth device and on the ear-
buds by pressing on the right earbud's touch pad until you hear the 
voice prompt "Volume max".

What should I check if I can’t pair the earbuds with my Bluetooth 
device?

Answer: 

If Bluetooth pairing does not work, proceed in the following order:

Charge the CX True Wireless for at least 1.5 hours to ensure they 
are fully charged. The charging LED pulsates yellow to indicate 
charging and permanent green to indicate they are fully charged.

Take the earbuds out of the charging case. 

Simultaneously touch and hold the right and left touch control for 
3 seconds to start pairing mode. The LED of the right earbud flash 
red and blue.

Start the search for Bluetooth devices on your smartphone and 
select “CX True Wireless”.

If necessary, enter the default pin code “0000” on your smart-
phone.

If, after the steps above, the Bluetooth pairing still does not work, 
restart the earbuds (see “How can I reset the earbuds?”). 

What should I check if one of my earbud’s LED are alternating 

Summary of Contents for 508973

Page 1: ...nes Model CX200TW1 CX200TW1 L CX200TW1 R CX200TW1 C Frequently asked questions FAQ Content Before you start During use If a problem occurs Sennheiser electronic GmbH Co KG Am Labor 1 30900 Wedemark Germany www sennheiser com Version June 2021 A01 ...

Page 2: ...d here TrueResponse Transducers I work commute and travel all the time Is the CX True Wireless a good option when on the go Answer The CX True Wireless has been created to deliver the best possible sound experience at any time With enhanced technology such as TrueResponse Transducers improved ergonomics superior all day battery life and IPX4 splash resistance it is now even better to enjoy on the ...

Page 3: ...ooth technology which pre vents power drain of the earbuds when stored in the charging case Despite this this new technology ensures that they still can quickly and automatically switch on and make a rapid Bluetooth connection so they are ready to go when you need them When the earbuds are not in use it is recommended to store them in the charging case How do I charge the earbuds and carrying case...

Page 4: ...s back into the charging case you might experience a small interruption in music reproduction due to the fact that ear buds will change their roles from the primary to the secondary or back In the second case you will not experience any interruptions and will be able to stay 100 focused on the call How do I access the voice assistant Answer Users can activate a preferred voice assistant such as Go...

Page 5: ...feature In a nutshell Sidetone is the ability to hear your own voice during a call The benefit of hearing yourself while on a call is being able to adjust your voice level based on your environment In a quiet environ ment you can lower your voice so you don t disturb people around you In a loud environment you can raise your voice so you can be heard clearly In very loud environments you might wan...

Page 6: ...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 ear phones 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 com...

Page 7: ...ours 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 ...

Page 8: ...ts up red 4 Press and hold the touch control panel for 10 seconds until you hear the voice prompt Pairing and a beep sound The LED of the earbud flashes green and red The earbud is in ear bud pairing mode 5 Now take the second earbud out of the charging case and make sure that the right and the left earbud are close together max distance 50 cm 6 Press and hold the touch control panel of the second...

Page 9: ...arbuds are charged and connected to your Blue tooth device Check that the Bluetooth settings of your connected device have media and calls connection activated Additionally make sure the earbuds are inserted into your ears cor rectly Increase the volume on your Bluetooth device and on the ear buds by pressing on the right earbud s touch pad until you hear the voice prompt Volume max What should I ...

Page 10: ...onds until you hear the voice prompt Pairing and a beep sound If pairing was successful you hear the voice prompt Pairing suc cessful and the LEDs of the earbuds flash blue 3x The earbuds are paired with each other and the factory default settings are restored Now pair the earbuds with your Bluetooth device Are there reasons why the earbuds may not recharge as usual Answer Ensure that the charging...

Page 11: ...mage is dependent on the Bluetooth technology being used by your Bluetooth device For best results make sure you are using a Bluetooth device which fully sup ports Audio Video Distribution Transport Protocol AVDTP 1 3 or higher Thus depending on the Bluetooth device or the mobile app the audio video synchronization experience may vary It is recom mended to use always the latest software for your B...

Page 12: ... also check that the microphone opening is not blocked by the ear itself Additionally wind may sometimes impact the quality of the phone call You could enable disable adjustable sidetone to improve phone call quality Which spare parts are available for my CX True Wireless Answer The following replacements of silicone ear adapters for the CX True Wireless are available 5 pairs of ear adapters White...

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