Contents

Sennheiser CX Plus True Wireless CXPLUSTW1 R Instruction Manual PDF

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Summary of Content for Sennheiser CX Plus True Wireless CXPLUSTW1 R Instruction Manual PDF

CX Plus 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 Getting started Using the earbuds FAQ/If a problem occurs ... Specifications

Sennheiser electronic GmbH & Co. KG Am Labor 1 30900 Wedemark Germany www.sennheiser.com

Version: 09/21 A01

Important safety instructions

2 | CX Plus True Wireless

Important safety instructions

Read this instruction manual carefully and completely before using the product.

Always include this instruction manual when passing the product on to third parties.

Do not use the product if it is obviously defective or makes loud, unusual (whistling or beeping) noise.

Only use the product in environments where Bluetooth wireless transmission is permitted.

Preventing damage to health and accidents 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. Sennheiser headphones sound exceptionally good at low and medium volume levels.

Do not insert the earphones too deep into your ears and never insert them without ear adapters. Always remove the earphones slowly and carefully from your ears.

The product generates stronger permanent magnetic fields that could cause interference with cardiac pace- makers, implanted defibrillators (ICDs) and other implants. Always maintain a distance of at least 3.94"/10 cm between the product component containing the magnet (earbuds and charging case) and the cardiac pacemaker, implanted defibrillator, or other implant.

Keep the product, accessories and packaging parts out of reach of children and pets to prevent accidents. Swallowing and chok- ing hazard.

Do not use the product in an environment that requires your spe- cial attention (e.g. in traffic). Especially the products active noise cancellation can make ambient noise inaudible or drastically change the perception of acoustic warning signals.

Preventing damage to the product and malfunctions Always keep the product dry and do not expose it to extreme tem-

peratures (hairdryer, heater, extended exposure to sunlight, etc.) to avoid corrosion or deformation. The normal operating tempera- ture is from 0 C to 40 C/32 F to 104 F.

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 earbuds.

Use only attachments/accessories/spare parts supplied or rec- ommended by Sennheiser.

Clean the product only with a soft, dry cloth.

Important safety instructions

CX Plus True Wireless | 3

Safety instructions for lithium-ion rechargeable batteries

Notes on the ingress protection rating of the earbuds The earbuds feature an IPX4 ingress protection rating which means they are protected from the ingress of water (protection class according to International Protection Marking (IP code), IEC standard 60529, tested under laboratory conditions). The earbuds can be used in the rain, for example. However, they are not suitable for immersion in water or for wearing in the shower. 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. The charging case is not splash waterproof. Always keep the charging case dry.

Notes on data collection and processing and on firmware updates This product stores individual settings such as the volume, the sound profiles and the Bluetooth connection data of paired devices. This data is required for the operation of the product and is not trans- ferred to Sennheiser or companies commissioned by Sennheiser and is not processed.

WARNING If abused or misused, rechargeable batteries may leak. In extreme cases, they may even present a risk of: explosion, fire development, heat generation, smoke or gas development.

Only use rechargeable batteries and chargers recommended by Sennheiser.

Only charge the product / rechargeable batteries at ambient temperatures between 10 C to 40 C/50 F to 104 F. Do not heat the product / rechargeable batteries above 70 C/158 F. Avoid exposure to sunlight and do not throw the product / rechargeable batteries into fire. When not using the product / rechargeable batteries for extended periods of time, charge them regularly (about every three months). Switch rechargeable battery-powered products off after use.

Dispose of defective products with built-in rechargeable batteries at special collection points or return them to your specialist dealer.

Important safety instructions

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Using the Sennheiser Smart Control app, you can update the firm- ware of the product for free via an Internet connection. If the device on which the app is installed is connected to the Internet, the follow- ing data is automatically transferred to and processed by Sennheiser servers in order to provide and transfer suitable firmware updates: hardware identifier, hardware revision number, firmware version of the product, operating system type (Android, iOS) and version, ver- sion of the app. The data will only be used as specified and will not be stored permanently. If you do not want this data to be transferred and processed, do not connect to the Internet.

Intended use/Liability These headphones have been designed as an accessory for Blue- tooth compliant devices. They are intended for wireless audio com- munication such as music playback and phone calls via Bluetooth wireless technology. It is considered improper use when the product is used for any appli- cation not named in the corresponding product documentation. Sennheiser does not accept liability for damage arising from misuse or improper use of this product and its attachments/accessories. Sennheiser is not liable for damages to USB devices that are not con- sistent with the USB specifications. Sennheiser is not liable for dam- ages resulting from the loss of connection due to flat or overaged rechargeable batteries or exceeding the Bluetooth transmission range. Before putting into operation, please observe the respective coun- try-specific regulations.

Package contents

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Package contents

Online you can find: this detailed instruction manual and additional information

(www.sennheiser.com/download) the Sennheiser Smart Control app for configuring the head-

phones and for additional functions (www.sennheiser.com/smartcontrol)

Earbud R for right ear (model: CXPLUSTW1 R) and earbud L for left ear (model: CXPLUSTW1 L)

Charging case (model: CXPLUSTW1 C) with built-in rechargeable battery for the earbuds

USB charging cable with USB-C and USB-A connec- tor, length approx. 0.25 m

Silicone ear adapters (size XS, S, M (pre-mounted to the earbuds) and L)

Quick guide

Safety guide

A list of accessories can be found on the CX Plus True Wireless product page at www.sennheiser.com. Contact your local Sennheiser partner: www.sennheiser.com/service-support.

Product overview

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Product overview

Charging case Model: CXPLUSTW1 C

LED displays the charging process/charge status of the rechargeable battery of the charging case or of the earbuds (when inserted into the charging case)

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 L

Magnetic holders

Charging compartment for the right earbud R

Charging contacts

1

6

7

5

6

8

2 3 4

6

Product overview

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Earbuds Model: CXPLUSTW1 R and CXPLUSTW1 L

Touch control panel

Changeable silicone ear adapters

Left earbud L

Status LED

Infra-red carrying senor

Magnetic holders

Charging contacts

Microphones for the active noise cancellation ANC, for the perception of ambient noise (Transparent Hearing) and for phone calls

Right earbud R

Built-in rechargeable battery

C C

D

A

CXPLUSTW1 RCXPLUSTW1 L

A

E EF

0 0

H B

E EF

I I

D

G G

Product overview

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Overview of the LED indications of the charging case

When a USB cable is connected, the LED of the charging case per- manently displays the charging process:

If you open the lid of the charging case and no USB cable is con- nected, the 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.

LED Charging case WITH earbuds inserted

Charging case WITHOUT earbuds inserted

pulses yellow

... earbuds and charging case are being charged

... charging case is being charged

lights up green

... earbuds and charging case are fully charged

... charging case is fully charged

flashes red

... a charging error/ battery error has been detected in at least one earbud (> 33)

... a charging error/ battery error has been detected in the charging case (> 33)

5s

Product overview

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Overview of the LED indications of the earbuds

LED Charging case WITH earbuds inserted

Charging case WITHOUT earbuds inserted

lights up green

... earbuds are fully charged and the charging case can still charge at least one complete cycle

... charging case is fully charged

pulses yellow

... earbuds are being charged via the rechargeable bat- tery of the charging case

lights up yellow

... earbuds are fully charged, the charging case cannot charge another complete cycle

... charging case is charged less than 50 %

lights up red

... rechargeable bat- teries of the earbuds and the charging case are empty

... rechargeable bat- tery of the charging case is empty

flashes red

... a charging error/ battery error has been detected in at least one earbud (> 33)

... a charging error/ battery error has been detected in the charging case (> 33)

If the LED does not light up: 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).

Product overview

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Notes on voice prompts The earbuds output voice prompts for events (the table gives some examples). Using the Smart Control app, you can change the lan- guage of the voice prompts, choose between voice prompts and beep sounds, or deactivate the status messages with a few excep- tions (e.g. rechargeable battery is empty).

LED Meaning; the earbuds... flashes red-blue for approx. 1 minute

... are in Bluetooth pairing mode

flashes blue 3x ... Bluetooth pairing or earbud pair- ing successful

flashes red 3x ... Bluetooth pairing or earbud pair- ing failed

lights up blue ... are connected to a device via Bluetooth

lights up red ... are not connected to a device via Bluetooth or the connection has been lost

flashes red quickly

... rechargeable battery is almost empty

flashes red slowly

... system error Perform a reset (> 34)

flashes red- green for approx. 1 minute

... are in earbud pairing mode (to pair the right and left earbud)

When you insert the earbuds into your ears, the LEDs of the earbuds automatically go off.

3x

3x

Voice prompt Meaning/earbuds... Power on ... are switched on Power off ... switch off Connected ... connected via Bluetooth No connection ... not connected via Bluetooth Pairing ... in Bluetooth pairing mode Pairing cancelled ... Bluetooth pairing cancelled Pairing successful ... Bluetooth pairing successful Pairing failed ... Bluetooth pairing not successful Recharge headset ... 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

Getting started

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Getting started

1. Waking up the earbuds and the charging case and charging the rechargeable batteries

Upon delivery, the rechargeable batteries of the earbuds and the charging case are in sleep mode and have to be woken up by con- necting them to a power source once.

Insert the earbuds into the charging case.

Connect the USB-C cable to the charging case and to a USB power source (> 14). The earbuds and the charging case are woken up and the rechargeable batteries are being charged. The earbuds are now ready for use.

2. Selecting suitable ear adapters for optimum fit of the earbuds

The perceived sound quality including bass performance and the best possible noise cancellation depend to a large extent on the cor- rect fit of the earbuds in the ear.

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).

L

R

USB-A

USB-C

L

M

S

XS

Getting started

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Assign the right earbud to your right ear and the left earbud to your left ear.

Insert the earbuds at a slight angle into the ears and twist them slightly into the ear canal so that they sit comfortably and snugly in the ear canal.

3. Connecting the earbuds to a Bluetooth device

Connect the earbuds to your smartphone via Bluetooth (> 16).

4. Installing the Smart Control app on your smartphone

The Sennheiser Smart Control app allows you to use all functions and settings of the earbuds and to e.g. adjust the sound to your liking using the equalizer (> 19).

RightLeft

L R

3s

LR

Pairing

Smart Control Sennheiser Smart Control

Using the earbuds

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Using the earbuds

Information on the rechargeable battery, the charging process and the first use The earbuds and the charging case each have a built-in rechargeable battery. The charging case allows you to store the earbuds safely at all times while they are being charged.

Upon delivery, the rechargeable batteries of the earbuds and the charging case are in sleep mode and have to be woken up by con- necting them to a power source once. Sennheiser recommends charging the earbuds and the charging case for a complete charging cycle without interruption before using for the first time. A complete charging cycle of the charging case and the earbuds takes about 1.5 hours. The quick charge function gives you approx. 1 hour of playback time after 10 minutes of charging. Sennheiser recommends using the supplied USB cable and a com- patible standard USB power supply for charging the headphones. When a USB cable connected to a power source is also connected to the charging case, the rechargeable battery of the charging case is being charged. When the earbuds are inserted into the charging case, their rechargeable batteries are being charged at the same time. The LED of the charging case displays the charge status (> 8). 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).

Rechargeable battery

Operating time with fully charged rechargeable batteries

Earbuds

approx. 8 hrs (test conditions: iPhone within 1 m distance, Bluetooth AAC codec, playback of mixed music, volume level 50 %, no EQ set- tings)

Earbuds and charging case

approx. 24 hrs (up to 2 additional charging cycles of the earbuds via the charging case)

Using the earbuds

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Charging the rechargeable battery of the earbuds and the charging case

1. Open the charging case by overcoming a slight magnetic resis- tance and insert the left earbud into the left charging compart- ment and the right earbud into the right charging compartment. The earbuds are magnetically pulled into the charging compart- ments.

2. Connect the USB-C connector of the USB cable to the USB-C socket of the charging case.

3. Connect the USB-A connector to a corresponding socket of a USB power source (to be ordered separately). Make sure that the USB power source is connected to the power supply system. The rechargeable batteries of the earbuds and the charging case are being charged. If no earbuds are inserted into the charging case, only the rechargeable battery of the charging case is being charged. The LED of the charging case displays the charge status:

LED Charging case WITH earbuds inserted

Charging case WITHOUT earbuds inserted

pulses yellow

... earbuds and charging case are being charged

... charging case is being charged

lights up green

... earbuds and charging case are fully charged

... charging case is fully charged

flashes red

... a charging error/ battery error has been detected in at least one earbud (> 33)

... a charging error/ battery error has been detected in the charging case (> 33)

If the LED does not light up: 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.

1 2

3

L

R

USB-A

USB-C

Using the earbuds

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Connecting the earbuds to a Bluetooth device To be able to use the Bluetooth wireless connection, you must regis- ter both devices (earbuds and e.g. smartphone) via the device set- tings of your smartphone. This process is called pairing. If operation differs from the steps mentioned, also refer to the instruction manual of the Bluetooth device you are using.

Information on the Bluetooth wireless connection The earbuds are compatible with Bluetooth 5.2. If your audio source supports one of the following high-resolution audio encoding methods, music is automatically played in high audio quality: aptX, aptX adaptive or AAC. Otherwise the headphones will play your music in normal audio quality (SBC). Paired devices establish the Bluetooth wireless connection immedi- ately after switch-on and are ready for use. When you switch the earbuds on, they automatically try to connect to the last connected Bluetooth device. The earbuds can save the connection profiles of up to six Bluetooth devices with which they have been paired. Audio playback is only possible from one device at a time. If you pair the earbuds with the seventh Bluetooth device, the saved connection profile of the least used Bluetooth device will be over- written. 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).

When you switch on the earbuds for the first time after initial charging, they automatically switch to Bluetooth pairing mode.

1

2

3

4

5

6

Using the earbuds

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Pairing the earbuds with a Bluetooth device

1. Take both earbuds out of the charging case and insert them into your ears (> 20). The distance between the earbuds and the Blue- tooth device should not exceed 40"/1 m.

2. Simultaneously touch and hold the right and the left touch control panel for 3 seconds until you hear the voice prompt Pairing and a beep. The LEDs of the earbuds flash blue and red. The earbuds are in pairing mode.

3. Activate Bluetooth on your Bluetooth device.

4. Via the menu of your Bluetooth device, start the search for new Bluetooth devices. All active Bluetooth devices in the proximity of your smartphone are displayed. From the list of found Bluetooth devices, select CX Plus True Wireless. 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.

Paired and connected Bluetooth device

Paired Bluetooth device (currently not connected)

The right and the left earbud also use a Bluetooth wireless con- nection. Both earbuds are paired with each other upon delivery. If you are using a different earbud (e.g. a spare earbud), the two earbuds must also be paired with each other (> 34).

max. 1 m/40 inch

ON

1

3 4

2

3xCX Plus True Wireless

************

Pairing successful

3s

LR

Pairing

Using the earbuds

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Switching the connection to paired Bluetooth devices/Connections To selectively switch the audio connection to paired Bluetooth devices using the Connections function, you require the Smart Control app (> 19).

In the Smart Control app, tap Connections. The list of Bluetooth devices paired with the earbuds appears.

From the list, select the paired device to which you want to con- nect the earbuds. Make sure that the desired device is switched on and Bluetooth is activated. The Bluetooth audio connection between the desired Bluetooth device and the earbuds is established. The app connection between the device with the Smart Control app installed and the earbuds remains active (only Bluetooth Low Energy for communication between app and earbuds, the device name is highlighted in bold).

Disconnecting the earbuds from a Bluetooth device Via the menu of your Bluetooth device, disconnect the connection

to the earbuds. The earbuds are disconnected from the Bluetooth device. The earbuds then search for other paired devices. If no device is found, you hear the voice prompt No connection. The head- phones switch to idle mode.

Pairing a spare earbud The right and the left earbud are paired with each other upon deliv- ery. If, however, you are using a different earbud (e.g. a spare ear- bud), you have to pair the two earbuds with each other once. 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.

If no connection is established within 1 minute, pairing mode is terminated and the earbuds switch to idle mode. If necessary, repeat the steps described above. If the earbuds are not paired with any Bluetooth device (the pairing list is empty), pairing mode is permanently active.

Using the Connections function in the Smart Control app, you can also selectively connect the earbuds to paired devices without terminating an existing connection (> 34).

If you want to clear the Bluetooth pairing list of the earbuds, reset the earbuds to the factory default settings (> 34).

Using the earbuds

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2. After 20 seconds, the earbuds are paired with each other. The LED of the charging case then lights up red and green 3x. The earbuds are now paired with each other.

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).

1 2

20s Connected

L

R

3 x

Keep open

Using the earbuds

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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 App Store or Google Play and install it on your smartphone. Alternatively, you can use your smartphone to scan the following QR code or to call up the following Internet site: www.sennheiser.com/smartcontrol

Connect your smartphone to the earbuds using Bluetooth (> 15).

Start the Smart Control app.

Follow the instructions in the app.

Smart Control Sennheiser Smart Control

Using the earbuds

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Selecting suitable ear adapters for optimum fit of the earbuds

The perceived sound quality including bass performance and the best possible noise cancellation depend to a large extent on the cor- rect fit of the earbuds in the ear.

Pull the ear adapter away from the in-ear sound tunnel.

Mount the new ear adapter to the in-ear sound tunnel. Ensure that it locks into place.

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. The ear adapters must fit snugly in the ear canal and com- pletely seal your ears.

Inserting the earbuds into the ears

Assign the right earbud to your right ear and the left earbud to your left ear.

Insert the earbuds at a slight angle into the ears and twist them slightly into the ear canal so that they sit comfortably and snugly in the ear canal (> 20).

LMSXS

Click

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.

RightLeft

L R

Using the earbuds

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Switching the earbuds on

Take both earbuds out of the charging case and insert them into your ears (> 20). If a paired Bluetooth device is within the transmission range, you hear the voice prompts Power On and Connected. The LEDs of the earbuds light up blue.

The Smart Pause function automatically stops music playback if you remove an earbud from your ear (> 25).

WARNING Danger of hearing damage due to high volume levels! Listening at high volume levels can lead to permanent hearing defects.

Before putting the headphones on, adjust the volume to a low level (> 22).

Do not continuously expose yourself to high volume levels.

If you take the earbuds out of the charging case during an incoming call, the call is automatically accepted and you can use the earbuds directly for making calls. This Auto Call function can also be deactivated (> 27).

The earbuds automatically switch to idle mode if no paired 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.

Connected

L R

Power On

Using the earbuds

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Switching the earbuds off

The earbuds do not have to be switched off explicitly.

Insert the earbuds into the charging case to switch them off. As soon as the earbuds are inserted into the charging case, they switch off and are being charged (> 14).

Adjusting the volume

To increase the volume:

Touch and hold the touch control panel of the right earbud until the volume is increased.

To reduce the volume:

Touch and hold the touch control panel of the left earbud until the volume is reduced.

The earbuds automatically switch to idle mode if no paired Bluetooth device can be found within 15 minutes. 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.

L R

WARNING Danger of hearing damage due to high volume levels! Listening at high volume levels can lead to permanent hearing defects. Before putting the headphones on and before toggling

between audio sources, adjust the volume to a low level.

Do not continuously expose yourself to high volume levels.

R L Hold Hold

Using the earbuds

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When the minimum or maximum volume is reached, you hear the voice prompt Volume max or Volume min.

Information on active noise cancellation ANC Due to the wearing style in the ear canal, the earbuds provide effec- tive passive isolation from ambient noise. In addition, the earbuds have an active noise cancellation (ANC) function, which allows you to reduce ambient noise to a minimum. This feed forward system with one microphone per earbud is espe- cially effective at reducing low-frequency noise. A possible feeling of pressure on the ears and the slight ANC noise (in very quiet environ- ments) is avoided with this system. Even when ANC is activated, your headphones' sound quality is always at its best. If you want to create a quiet space in a noisy environment, you can simply use the earbuds as noise protection by using ANC.

Notes on active noise cancellation Continuous 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. If unusual (whistling or beeping) noise occurs, take the head-

phones off and put them on again. Make sure that the earbuds properly fit in your ears and make a good seal with the ear canal.

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.

With active noise cancellation ANC activated, the battery life of the earbuds is reduced.

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.

You can also adjust the volume using the connected Bluetooth device.

Using the earbuds

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Listening of ambient noise or conversations - activating/deactivating the Transparent Hearing function With Transparent Hearing activated, you can hear ambient sounds or communicate without having to remove the earbuds from your ears. This allows you to hear e.g. announcements in the train or aircraft or to have short conversations.

Tap the touch control panel of the left earbud 1x. The Transparent Hearing mode set in the Smart Control app is activated. You can hear ambient sounds without having to remove the earbuds from your ears.

To deactivate Transparent Hearing:

Tap the touch control panel of the left earbud 1x.

Adjusting the Transparent Hearing function To be able to fully use Transparent Hearing, you require the Smart Control app (> 19).

Select the desired Transparent Hearing function in the Smart Control app:

You can also activate or deactivate the active noise cancella- tion ANC via the Smart Control app.

ON/OFF

3 x L

ON/OFF

1 x L

Using the earbuds

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*: default setting

Using the voice assistant/voice dialing Tap the touch control panel of the right earbud 3x.

The available voice assistant of your smartphone is activated (*depending on the system or app on your smartphone: Siri, Goo- gle Assistant, ...).

Ask the voice assistant your question or make a request. To cancel the voice assistant/voice dialing:

Tap the touch control panel of the right earbud 3x.

Using the Smart Pause function The earbuds automatically detect whether they are worn in the ear or removed from the ear. Music playback pauses when you remove an earbud from your ear and resumes when you insert it again (if you interrupt for more than 2 minutes, playback will not start automatically). 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.

Transparent Hearing Description Keep music playing and mix with ambient sound

Audio playback (e.g. music) continues and is mixed with ambient sounds.

No music playback, only ambient sound*

Audio playback (e.g. music) is muted and you hear only ambient sounds.

Right touch control panel Function Tap 3x

Activates the voice assistant

ON/OFF

3 x

Using the earbuds

26 | CX Plus True Wireless

Playing/pausing music Tap the touch control panel of the right earbud 1x.

Playing the previous track Tap the touch control panel of the left earbud 2x.

Playing the next track Tap the touch control panel of the right earbud 2x.

Right touch control panel Function Tap 1x Plays or pauses music

Left touch control panel Function Tap 2x Plays the previous track in the playlist

Right touch control panel Function Tap 2x Plays the next track in the playlist

1 x

L2 x

R2 x

Using the earbuds

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Making calls using the earbuds The call functions are only available when the earbuds and the smartphone are connected via Bluetooth. Some smartphones and telephony apps (e.g. WhatsApp, Skype, WeChat) may not support all call control functions. During a call, you can use the right and/or left earbud to control the call functions.

Making a call 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).

Accepting/rejecting/ending a call If your headphones are connected to a smartphone and you receive a call, you hear a ring tone in the headphones. If you are playing music when you receive a call, the music pauses until you end the call.

Using the Auto Call function If you take the paired earbuds out of the charging case during an incoming call, the call is automatically accepted and you can use the earbuds directly for making calls.

Right or left touch control panel Function

Tap 1x Accepts a call

Tap 1x Ends a call Voice prompt Call ended

Tap 2x Rejects a call Voice prompt Call rejected

Tap 1x Accepts an incoming call and ends the active call

Tap 2x Rejects an incoming call and contin- ues the active call

Using the earbuds

28 | CX Plus True Wireless

You can activate (default setting) or deactivate the function via the Smart Control app. Note that both earbuds must be switched on to adjust the settings for both earbuds (right and left).

Using the Sidetone function When using the earbuds for phone calls, you may find it more com- fortable if your own voice is audible in the earbuds. With the Sidetone function activated, your own voice is played back through the earbuds during a phone call. You can activate the function (default setting) and adjust settings or deactivate the function via the Smart Control app. Note that both earbuds must be switched on to adjust the settings for both earbuds (right and left).

Displaying the battery charge status When the earbuds are connected to your Bluetooth device, the bat- tery charge status can be displayed on the screen of your smart- phone or device (depending on the device and operating system used). The Smart Control app also displays the charge status of the ear- buds' rechargeable batteries.

Displaying the battery charge status using the charging case

If no USB cable is connected to the charging case:

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.

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.

5s

Using the earbuds

CX Plus True Wireless | 29

LED Charging case WITH earbuds inserted

Charging case WITHOUT earbuds inserted

lights up green

... earbuds are fully charged and the charging case can still charge at least one complete cycle

... charging case is fully charged

pulses yellow

... earbuds are being charged via the rechargeable bat- tery of the charging case

lights up yellow

... earbuds are fully charged, the charging case cannot charge another complete cycle

... charging case is charged less than 90 %

lights up red

... rechargeable bat- teries of the earbuds and the charging case are empty

... rechargeable bat- tery of the charging case is empty

flashes red

... a charging error/ battery error has been detected in at least one earbud (> 33)

... a charging error/ battery error has been detected in the charging case (> 33)

Using the earbuds

30 | CX Plus True Wireless

Adjusting sound effects/the equalizer To be able to use the sound effects/equalizer, you require the Smart Control app (> 19).

In the Smart Control app, select the desired sound effects via the equalizer. You can use predefined presets or define your own set- tings. The sound effects are stored in the earbuds. These sound set- tings are active even without using the Smart Control app, i.e. when you are using a different Bluetooth device. Note that both earbuds must be switched on to adjust the settings for both ear- buds (right and left).

Setting the voice prompts/beep sounds To be able to set the voice prompts and beep sounds, you require the Smart Control app (> 19). You can change the language of the voice prompts, choose between voice prompts and beep sounds, or deactivate the status messages with a few exceptions (e.g. rechargeable battery is empty). Note that both earbuds must be switched on to adjust the settings for both earbuds (right and left).

Customizing the control functions To be able to customize the control functions for music playback, you require the 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).

Using the earbuds

CX Plus True Wireless | 31

Storing or transporting the earbuds in the charging case Store the earbuds in the charging case to prevent damage to the ear- buds when you are not using them or transporting them. The earbuds are automatically charged in the charging case so you always have the full battery life to work with.

Open the lid of the charging case by overcoming a slight magnetic resistance and insert the left earbud into the left charging com- partment and the right earbud into the right charging compart- ment. The earbuds are magnetically pulled into the charging compart- ments.

Close the lid of the charging case.

L R

Care and maintenance of the earbuds/charging case

32 | CX Plus True Wireless

Care and maintenance of the earbuds/charging case

Only clean the charging case with a soft, dry cloth.

Clean the earbuds with a slightly damp cloth.

You can clean the silicone ear adapters under lukewarm running water. Let the ear adapters air dry at room temperature for at least 12 hours before re-attaching them to the earbuds.

Clean the charging contacts on the earbuds and in the charging case from time to time using e.g. a cotton swab.

If the earbuds have gotten wet:

Remove the ear adapters and dry the earbuds and ear adapters with a dry cloth. If necessary, leave the earbuds and ear adapters dry at room temperature for approx. 12 hours.

Replacing the ear adapters For reasons of hygiene, you should replace your ear adapters from time to time. Spare ear adapters are available from your Sennheiser 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.

CAUTION Liquids can damage the electronics of the product! Liquids entering the housing of the product can cause a short-circuit and damage the electronics. Keep all liquids far away from the product. Do not use any solvents or cleansing agents.

Care and maintenance of the earbuds/charging case

CX Plus True Wireless | 33

Information on the built-in rechargeable battery Sennheiser ensures and guarantees that the rechargeable batteries perform at their optimum upon purchase of the product. If, upon pur- chase or within the warranty period, you suspect that a rechargeable battery is obviously defective or if a charging error/battery error is displayed (> 8), stop using the product, disconnect it from the power supply system and contact your Sennheiser partner. Your Sennhe- iser partner will coordinate the repair/replacement with you. Do not return a product with a defective battery to your dealer or Sennheiser partner unless requested to do so. To find a Sennheiser partner in your country, search at www.sennheiser.com/service- support.

Installing firmware updates Firmware updates can be downloaded free of charge from the Inter- net using the Sennheiser Smart Control app.

Before updating, the earbuds must be removed from the charging case and must not be placed back into the charging case during the update.

Connect your earbuds to your smartphone and start the Smart Control app (> 19).

The app provides information on available firmware updates and guides you through the installation process.

Make sure that the batteries are fully charged before updating (> 14). Avoid connecting or disconnecting the USB power supply during the update process.

Click

LMSXS

FAQ/If a problem occurs ...

34 | CX Plus True Wireless

FAQ/If a problem occurs ... Current list of frequently asked questions (FAQ) Visit the CX Plus True Wireless product page at

www.sennheiser.com There you will find a current list of frequently asked questions (FAQ) and suggested solutions.

Your question has not been answered or the problem persists? If a problem occurs that is not listed in the FAQ section or if the prob- lem cannot be solved with the proposed solutions, please contact your Sennheiser partner for assistance. To find a Sennheiser partner in your country, search at www.sennhe- iser.com/service-support.

Leaving the Bluetooth transmission range Wireless calling and streaming are only possible in the Bluetooth transmission range of your smartphone. The transmission range largely depends on environmental conditions such as wall thickness, wall composition etc. With a free line of sight, the transmission range of most smartphones and Bluetooth devices is up to 10 meters. If you, and therefore the earbuds, leave the Bluetooth transmission range of the smartphone, the sound quality deteriorates increasingly until you hear the voice prompt No connection and the connection breaks down completely. If you immediately re-enter the Bluetooth transmission range, the connection is automatically re-established and you hear the voice prompt Connected. If this is not the case, tap the touch control panel of the earbud 1x.

Resetting the earbuds If the function of the earbuds is disturbed, perform a reset. Individual settings such as the pairing settings are not deleted. Insert both earbuds into the charging case, close the lid of the charging case and wait at least 10 seconds before taking the earbuds out of the charging case and switching them on again.

Resetting the earbuds to the factory default settings If the function of the earbuds is disturbed and a reset (> 34) does not improve, reset the earbuds to the factory default settings. This deletes, among other things, all pairing settings (> 17). The easiest way to reset the earbuds to the factory default settings is using the 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.

FAQ/If a problem occurs ...

CX Plus True Wireless | 35

3. Touch and hold the touch control panel of the earbud that is not in the charging case for 10 seconds. The LED on this earbud alternately lights up green and red.

4. Now stop touching the touch control panel.

5. Place the earbud back into the charging case. Be sure to leave the lid of the charging case open when doing so. After 20 seconds, the earbuds are reset to the factory default set- tings and automatically paired with each other.

After the earbuds have been successfully reset and paired with each other, the LED on the charging case lights up red and green 3x.

To reconnect your earbuds to your smartphone, reactivate Blue- tooth on your smartphone.

Pairing a spare earbud with another earbud The right and the left earbud are paired with each other upon deliv- ery. If, however, you are using a different earbud (e.g. a spare ear- bud), you have to pair the two earbuds with each other once. 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.

2. After 20 seconds, the earbuds are paired with each other. The LED on the charging case then lights up red and green 3x. The earbuds are now paired with each other.

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).

OFF

1 32

10s

20s

Connected

4 5 Keep open

FAQ/If a problem occurs ...

36 | CX Plus True Wireless

1 2

20s Connected

L

R

3 x

Keep open

Specifications

CX Plus True Wireless | 37

Specifications CX Plus True Wireless

Model: CXPLUSTW1, CXPLUSTW1 C, CXPLUSTW1 L, CXPLUSTW1 R

Wearing style True Wireless stereo earbuds

Ear coupling ear-canal

Frequency response 5 Hz to 21 kHz

Transducer principle dynamic

Transducer size 7 mm

Sound pressure level (SPL) 114 dB (1 kHz/0 dBFS)

THD (1 kHz, 94 dB SPL) 0.08 % (1 kHz, 94 dB)

Noise cancellation ANC technology with one pick-up microphone

Microphone principle MEMS

Microphone frequency response

100 Hz to 10 kHz

Microphone pick-up pattern (speech and ANC)

2-microphone beamforming array for active noise cancellation per earbud

Power supply built-in lithium rechargeable batteries, 3.7 V earbuds: 55 mAh charging case: 400 - 420 mAh USB charging via USB-C socket of the charging case: 5 V , 600 mA

Operating time 8 hrs with rechargeable battery of the earbud 24 hrs with rechargeable battery of the charging case (test conditions: iPhone within 1 m distance, Bluetooth AAC codec, volume level 50 %, Transparent Hearing off, ANC off, no EQ settings)

Charging time of rechargeable batteries

approx. 1.5 hours for full charge approx. 10 minutes for 1 hour of music playback

Temperature range operation: 0 to +40C storage: 20 to +60C

Relative humidity operation: 10 to 80 %, non condensing storage: 10 to 90 %

Magnetic field strength earbuds: 0.7 mT charging case: 39 mT

Ingress protection of the earbuds splash proof (IPX4)

Weight earbuds: approx. 6 g each charging case: approx. 35 g Both earbuds and charging case: 47 g

Specifications

38 | CX Plus True Wireless

Bluetooth

Version Bluetooth 5.2 compatible, class 1

Transmission frequency 2,402 MHz to 2,480 MHz

Modulation GFSK, /4 DQPSK, 8DPSK

Profiles HFP, AVRCP, A2DP

Output power 10 mW (max)

Codec aptX, aptX adaptive, AAC, SBC

Device name CX Plus True Wireless

Manufacturer Declarations

CX Plus True Wireless | 39

Manufacturer Declarations Warranty Sennheiser electronic GmbH & Co. KG gives a warranty of 24 months on this product. For the current warranty conditions, please visit our website at www.sennheiser.com or contact your Sennheiser partner.

In compliance with the following requirements General Product Safety Directive (2001/95/EC) Compliant to Sound Pressure Limits according to country spe-

cific requirements

EU declaration of conformity RoHS Directive (2011/65/EU) Hereby, Sennheiser electronic GmbH & Co. KG declares that the radio equipment type CXPLUSTW1 (CXPLUSTW1 R, CXPLUSTW1 L, 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.com/download.

UK declaration of conformity RoHS Directive (2011/65/EU) Radio Equipment Regulations (2017)

Notes on disposal Battery Directive (2006/66/EC & 2013/56/EU) WEEE Directive (2012/19/EU) The symbol of the crossed-out wheeled bin on the product, the bat- tery/rechargeable battery (if applicable) and/or the packaging indi- cates that these products must not be disposed of with normal household waste, but must be disposed of separately at the end of their operational lifetime. For packaging disposal, please observe the legal regulations on waste segregation applicable in your country. Further information on the recycling of theses products can be obtained from your municipal administration, from the municipal col- lection points, or from your Sennheiser partner. The separate collection of waste electrical and electronic equip- ment, batteries/rechargeable batteries (if applicable) and packag- ings is used to promote the reuse and recycling and to prevent neg- ative effects caused by e.g. potentially hazardous substances contained in these products. Herewith you make an important con- tribution to the protection of the environment and public health.

Trademarks Sennheiser is a registered trade mark of Sennheiser electronic GmbH & Co. KG. Apple, iPhone, the Apple logo and Siri are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. The trademark iPhone is used in Japan with a license from Aiphone K.K. Google Play and the Google Play logo are trademarks of Google LLC.

Manufacturer Declarations

40 | CX Plus True Wireless

The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Sennhe- iser electronic GmbH & Co. KG is under license. Qualcomm aptX is a product of Qualcomm Technologies Interna- tional, Ltd. Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries, used with per- mission. apt

Manualsnet FAQs

If you want to find out how the CX Plus True Wireless Sennheiser works, you can view and download the Sennheiser CX Plus True Wireless CXPLUSTW1 R Instruction Manual on the Manualsnet website.

Yes, we have the Instruction Manual for Sennheiser CX Plus True Wireless as well as other Sennheiser manuals. All you need to do is to use our search bar and find the user manual that you are looking for.

The Instruction Manual should include all the details that are needed to use a Sennheiser CX Plus True Wireless. Full manuals and user guide PDFs can be downloaded from Manualsnet.com.

The best way to navigate the Sennheiser CX Plus True Wireless CXPLUSTW1 R Instruction Manual is by checking the Table of Contents at the top of the page where available. This allows you to navigate a manual by jumping to the section you are looking for.

This Sennheiser CX Plus True Wireless CXPLUSTW1 R Instruction Manual consists of sections like Table of Contents, to name a few. For easier navigation, use the Table of Contents in the upper left corner.

You can download Sennheiser CX Plus True Wireless CXPLUSTW1 R Instruction Manual free of charge simply by clicking the “download” button in the upper right corner of any manuals page. This feature allows you to download any manual in a couple of seconds and is generally in PDF format. You can also save a manual for later by adding it to your saved documents in the user profile.

To be able to print Sennheiser CX Plus True Wireless CXPLUSTW1 R Instruction Manual, simply download the document to your computer. Once downloaded, open the PDF file and print the Sennheiser CX Plus True Wireless CXPLUSTW1 R Instruction Manual as you would any other document. This can usually be achieved by clicking on “File” and then “Print” from the menu bar.