Page 1
CX Plus True Wireless CX Plus SE True Wireless CX 500BT True Wireless True Wireless stereo earbuds Model: CXPLUSTW1, CXPLUSTW1 R, CXPLUSTW1 L, CXPLUSTW1 C Instruction manual Use the search function, the navigation (left) or the following links: Start “Product overview”...
Protect your hearing from high volume levels. Permanent hearing damage may occur when headphones are used at high volume levels for long periods of time. Head- phones of the Sennheiser brand sound exceptionally good even at low and medium volume levels. ▷...
Page 3
In case of permanent moisture/wetness, the ingress protection can be reduced and the product can be damaged. Do not charge wet earbuds. Completely dry wet earbuds with a dry cloth before charging them. CX Plus True Wireless | 3...
Page 4
Sonova Consumer Hearing GmbH or companies commis- sioned by Sonova Consumer Hearing GmbH and is not processed. Using the “Sennheiser Smart Control” app, you can update the firm- ware of the product for free via an Internet connection. If the device...
• the Sennheiser Smart Control app for configuring the head- phones and for additional functions (www.sennheiser-hearing.com/smartcontrol) A list of accessories can be found on the CX Plus True Wireless product page at www.sennheiser-hearing.com. Contact your local Sonova Consumer Hearing partner: www.sennheiser-hearing.com/service-support.
Input for USB-C connector for charging the rechargeable batteries Built-in rechargeable battery for charging the earbuds on the go Type plate Charging compartment for the left earbud Magnetic holders Charging compartment for the right earbud Charging contacts 6 | CX Plus True Wireless...
Page 7
Left earbud Status LED Infra-red carrying senor Magnetic holders Charging contacts Microphones for the active noise cancellation ANC, for the perception of ambient noise (“Transparency Mode”) and for phone calls Right earbud Built-in rechargeable battery CX Plus True Wireless | 7...
LED of the charging case displays the battery charge status or the charging process of the earbuds. If you close the lid of the charging case, the LED will go off after 5 seconds. 8 | CX Plus True Wireless...
• Clean the contacts on the earbuds and in the charging case (> 32). • Charge the rechargeable batteries of the earbuds and the charging case until the LED lights up again (> 14). Overview of the LED indications of the earbuds CX Plus True Wireless | 9...
... Rechargeable battery is almost empty. Recharge the rechargeable battery. “Call rejected” ... incoming call rejected “Call ended” ... call ended “Volume min” ... volume set to minimum “Volume max” ... volume set to maximum 10 | CX Plus True Wireless...
Test which ear adapter size gives you the best sound quality and the best wearing comfort. ▷ You can choose between 4 different ear adapters in size XS, S, M and L (> 20). CX Plus True Wireless | 11...
Page 12
Smart Control “Sennheiser Smart Control” The Sennheiser Smart Control app allows you to use all functions and settings of the headphones and to e.g. adjust the sound to your liking using the equalizer (> 19). 12 | CX Plus True Wireless...
When the battery charge of the earbuds drops to a critical level, a voice prompt asks you to recharge the earbuds (“Recharge head- set”). The charge status of the rechargeable battery of the charging case is displayed by the LED on the charging case (> 8). CX Plus True Wireless | 13...
• Clean the contacts on the earbuds and in the charging case (> 32). • Charge the rechargeable batteries of the earbuds and the charging case (at least 30 minutes) until the LED lights up again. 14 | CX Plus True Wireless...
Page 15
If you want to re-establish a connection with the overwritten Bluetooth device, you have to pair the earbuds again. Using the Smart Control app, you can view the list of paired devices and selectively connect and disconnect devices (“Connections”; > 17). CX Plus True Wireless | 15...
From the list of found Bluetooth devices, select “CX True Wire- less”. If necessary, enter the default pin code “0000”. If pairing was successful, you hear the voice prompt “Pairing suc- cessful” and the LEDs of the earbuds flash blue 3x. 16 | CX Plus True Wireless...
Page 17
This pairing process resets the earbuds to the factory default settings. 1. Insert both earbuds into the charging case and leave the lid of the charging case open. CX Plus True Wireless | 17...
Page 18
If you have closed the lid of the charging case too early, repeat the above procedure. After the pairing process with a spare earbud, all settings are reset. Pair the earbuds with your smartphone again (> 16). Keep open Connected 18 | CX Plus True Wireless...
Installing the Smart Control app To make full use of all the settings and functions of the headphones, you need to have the free Sennheiser Smart Control app installed on your smartphone. Download the app from the Apple App Store or Google Play and install it on your smartphone.
(> 20). The right or left earbud can be used alone. If you insert one earbud into the charging case during use, a short interruption of playback may occur in the other earbud. 20 | CX Plus True Wireless...
Bluetooth device can be found within 15 minutes. You can also change this setting via the Smart Control app. You can wake up the earbuds from idle mode by touching their touch control panels 1x or by briefly inserting them into the charging case. CX Plus True Wireless | 21...
Touch and hold the touch control panel of the left earbud until the volume is reduced. When the maximum or minimum volume is reached, you hear the voice prompt “Volume max” or “Volume min”. 22 | CX Plus True Wireless...
Page 23
Activating/deactivating the active noise cancellation ANC ▷ Tap the touch control panel of the left earbud 3x. The active noise cancellation ANC is activated or deactivated. ON/OFF 3 x L CX Plus True Wireless | 23...
Page 24
Audio playback (e.g. music) continues mix with ambient sound” and is mixed with ambient sounds. “No music playback, only Audio playback (e.g. music) is muted ambient sound”* and you hear only ambient sounds. *: default setting 24 | CX Plus True Wireless...
You can activate (default setting) or deactivate the function via the Smart Control app. Controlling music playback The music playback functions are only available when the earbuds and the device are connected via Bluetooth. Some smartphones or music players may not support all functions. CX Plus True Wireless | 25...
Page 26
Plays the previous track in the playlist Playing the next track ▷ Tap the touch control panel of the right earbud 2x. Right touch control panel Function Tap 2x Plays the next track in the playlist 26 | CX Plus True Wireless...
Page 27
Dial the desired number on your smartphone. If your smartphone does not automatically transfer the call to the headphones, select “CX Plus True Wireless” as the audio source on your smartphone (see the instruction manual of your smart- phone if necessary).
Page 28
Open the lid of the charging case. The LED of the charging case displays the battery charge status. If you close the lid of the charging case, the LED will go off after 5 seconds. 28 | CX Plus True Wireless...
Page 29
... a charging error/ ... a charging error/ battery error has flashes battery error has been detected in at been detected in the least one earbud (> charging case (> 33) CX Plus True Wireless | 29...
Page 30
Smart Control app (> 19). The app allows you to customize the control functions and other commands or to select preset control functions. Some basic func- tions cannot be changed (e.g. call control). 30 | CX Plus True Wireless...
Page 31
The earbuds are magnetically pulled into the charging compart- ments. ▷ Close the lid of the charging case. CX Plus True Wireless | 31...
Page 32
Spare ear pads are available from your Sonova Con- sumer Hearing partner. 1. Pull the ear adapter away from the in-ear sound tunnel. 2. Mount the new ear adapter to the in-ear sound tunnel. Ensure that it locks into place. 32 | CX Plus True Wireless...
Do not return a product with a defective battery to your dealer or Sonova Consumer Hearing partner unless requested to do so. To find a partner in your country, search at www.sennheiser-hearing.com/ service-support Installing firmware updates Firmware updates can be downloaded free of charge from the Inter- net using the Sennheiser Smart Control app.
Page 34
Smart Control app. Alternatively, you can manually proceed as follows: 1. Deactivate Bluetooth on your smartphone. The connection between your smartphone and the CX Plus True Wireless is disconnected. 2. Take one earbud out of the charging case, leave the other earbud in the charging case.
Page 35
If you have closed the lid of the charging case too early, repeat the above procedure. After the pairing process with a spare earbud, all settings are reset. Pair the earbuds with your smartphone again (> 16). CX Plus True Wireless | 35...
Page 36
FAQ/If a problem occurs ... Keep open Connected 36 | CX Plus True Wireless...
Magnetic field strength earbuds: 0,7 mT charging case: 39 mT Ingress protection of the splash proof (IPX4) earbuds Weight earbuds: approx. 6 g each charging case: approx. 35 g both earbuds and charging case: 47 g CX Plus True Wireless | 37...
Page 38
Bluetooth 5.2 compatible, class 1 Transmission frequency 2,402 MHz to 2,480 MHz GFSK, π/4 DQPSK, 8DPSK Modulation Profiles HFP, AVRCP, A2DP Output power 10 mW (max) Codec aptX®, aptX adaptive®, AAC, SBC Device name CX Plus True Wireless 38 | CX Plus True Wireless...
CXPLUSTW1 C) is in compliance with the Radio Equipment Directive (2014/53/EU). The full text of the EU declaration of conformity is available at the fol- lowing Internet address: www.sennheiser-hearing.com/download. UK declaration of conformity • RoHS Regulations (2012) • Radio Equipment Regulations (2017) CX Plus True Wireless | 39...
Page 40
United States and other countries, used with per- mission. Other product and company names mentioned in the user documen- tation may be the trademarks or registered trademarks of their respective holders. 40 | CX Plus True Wireless...
Page 41
• Consult the dealer or an experienced radio/TV technician for help. Changes or modifications made to this equipment not expressly approved by the manufacturer may void FCC authorization to oper- ate this equipment. CX Plus True Wireless | 41...