Sennheiser CX 400BT Series Instruction Manual Download

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CX 400BT True Wireless

True wireless stereo earphones

Model: CX400TW1, CX400TW1 R, CX400TW1 L, CX400TW1 C

Instruction manual

Use the search function, the navigation (left) or the following links:

Start

“Product overview”

“Getting started”

“Using the earphones”

“FAQ/If a problem occurs ...”

“Specifications”

Sennheiser electronic GmbH & Co. KG

Am Labor 1

30900 Wedemark

Germany

www.sennheiser.com

Version: 09/20 A01

Summary of Contents for CX 400BT Series

Page 1: ...00TW1 C Instruction manual Use the search function the navigation left or the following links Start Product overview Getting started Using the earphones FAQ If a problem occurs Specifications Sennheiser electronic GmbH Co KG Am Labor 1 30900 Wedemark Germany www sennheiser com Version 09 20 A01 ...

Page 2: ...rference 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 cho...

Page 3: ...r 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 damag...

Page 4: ...tcontrol Earbud R for right ear CX400TW1 R and earbud L for left ear CX400TW1 L Charging case with built in rechargeable battery for the earbuds CX400TW1 C USB charging cable with USB C and USB A connector 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 400BT True Wire less product page at www se...

Page 5: ...of the earbuds when inserted into the charging case Input for USB C connector for charging the rechargeable batteries LED button activates the LED display for 5 seconds 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 2 3 4 5 7 8 6 7 9 ...

Page 6: ...ar adapters Left earbud L slave earbud receives signals from the right earbud Status LED Magnetic holders Charging contacts Microphones for phone calls Right earbud R master earbud controls the Bluetooth con nection to the smartphone and to the left earbud Openings for acoustic optimization Built in rechargeable battery ...

Page 7: ...e battery charge status or the charging process of the earbuds for 5 seconds LED ChargingcaseWITH 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...

Page 8: ...ow 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 30 a charging error battery error has been detected in th...

Page 9: ...ected to the master earbud R lights up red are not connected to a device via Bluetooth or the connection has been lost master earbud R is not connected to a smartphone slave earbud L is not connected to the master earbud R flashes red quickly rechargeable battery is almost empty flashes red slowly system error the Smart Control app may display details Perform a restart 31 flashes red green for app...

Page 10: ...Product overview 10 CX 400BT True Wireless Call rejected incoming call rejected Call ended call ended Volume min volume set to minimum Volume max volume set to maximum Voice prompt Meaning earbuds ...

Page 11: ...s and the charging case are woken up and the rechargeable batteries are being charged The earbuds are now ready for use Alternatively Press and hold the LED button on the charging case for 3 sec onds The earbuds and the charging case are woken up and can now be used 2 Selecting suitable ear adapters for optimum fit of the earbuds The perceived sound quality including bass performance and the best ...

Page 12: ...lightly into the ear canal so that they sit comfortably and snugly in the ear canal 3 Connecting the earphones to a Bluetooth device Connect the earphones 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 earphones and to e g adjust the sound to your liking using the equaliz...

Page 13: ... 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 box their rechargeable batteries are being charged at the same time The ...

Page 14: ...ke 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 ChargingcaseWITH earbuds inserted Charging case WITHOUT earbuds in...

Page 15: ...the Bluetooth wireless connection immedi ately after switch on and are ready for use When you switch the earphones on they automatically try to con nect to the last connected Bluetooth device The earphones can save the connection profiles of up to eight Bluetooth devices with which they have been paired Audio playback is only possible from one device at a time If you pair the earphones with the ni...

Page 16: ...imity of your smartphone are displayed From the list of found Bluetooth devices select CX 400BT TW 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 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...

Page 17: ...rphones The earphones are disconnected from the Bluetooth device The earphones 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 the earbuds with each other optional 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 h...

Page 18: ... prompt Pairing and a beep The LEDs of the earbuds flash green and red The earbuds are in earbud pairing mode If pairing was successful you hear the voice prompt Pairing suc cessful and the LEDs of the earbuds flash blue 3x Now pair the earbuds with your Bluetooth device 16 1 3 4 2 Pairing successful Pairing L R max 50 cm Bluetooth off USB A USB C Hold 10s 3x ...

Page 19: ...rol Connect your smartphone to the earphones using Bluetooth 15 Start the Smart Control app Follow the instructions in the app Simultaneously touch and hold the right and the left touch control panel for 3 seconds to accept the Bluetooth Low Energy connec tion The Smart Control app recognizes the earphones and activates all available settings and functions If you connect the earphones via the Smar...

Page 20: ... 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 earphone to your right ear and the left earphone to your left ear Insert the earbuds at a slight angle into the ears ...

Page 21: ...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 25 The earb...

Page 22: ...ume max or Volume min You can also switch off the earbuds manually idle mode via the Smart Control app 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 WARNING Danger of hearing damage due to high volume l...

Page 23: ... control panel of the right or left earbud 1x Controlling music playback The music playback functions are only available when the earphones and the device are connected via Bluetooth Some smartphones or music players may not support all functions Playing pausing music Tap the touch control panel of the left earbud 1x Playing the previous track Tap the touch control panel of the left earbud 2x R ON...

Page 24: ...aking a call Dial the desired number on your smartphone If your smartphone does not automatically transfer the call to the headphones select CX 400BT TW as the audio source on your smartphone see the instruction manual of your smartphone 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 y...

Page 25: ... 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 Press the LED button of the charging case The LED of the charging case displays the battery charge status for 5 seconds Right or left touch control panel Function Tap 1x Acc...

Page 26: ...ng 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 a...

Page 27: ...rent Bluetooth device 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 Customizing the control functions To be able to customize the contr...

Page 28: ...sporting them The ear phones are automatically charged in the charging case so you always have the full battery life to work with 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 Close the charg...

Page 29: ...case from time to time using e g a cotton swab 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...

Page 30: ...ry is obviously defective or if a charging error battery error is displayed 7 stop using the product disconnect it from the power supply system and immediately return the product to any Sennheiser service partner Installing firmware updates Firmware updates can be downloaded free of charge from the Inter net using the Sennheiser Smart Control app Connect your earphones to your smartphone and start...

Page 31: ...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 The right earbud master earbud can be used alone The left earbud slave earbud cannot be used alone because it requires the right earbud for Bluet...

Page 32: ...FAQ If a problem occurs 32 CX 400BT True Wireless You can also reset the earphones to the factory default settings using the Smart Control app L R 5s ...

Page 33: ...ging case 400 420 mAh USB charging via USB C socket of the charging case 5 V 600 mA Operating time 7 hrs with rechargeable battery of the earbud test conditions iPhone within 1 m distance Bluetooth AAC codec volume level 50 no EQ settings 20 hrs with rechargeable battery of the charging case Charging time of rechargeable batteries approx 1 5 hrs Temperature range operation 0 to 40 C storage 25 to ...

Page 34: ...Specifications 34 CX 400BT True Wireless Device name CX 400BT TW LE CX 400BT TW Bluetooth Low Energy only Number of active connections 1 ...

Page 35: ...e 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...

Page 36: ...demark of Qualcomm Technologies International Ltd registered in the 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 ...

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