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Sennheiser CX Manual | Step-by-step, In-depth Guide 2022

The Sennheiser CX have a 7mm dynamic driver, Bluetooth 5.2, a 2-mic beamforming array, the IPX4 dust and sweat-proof certification, a battery life of about 9 hours + 18 hours using the charging case, built-in Lithium rechargeable batteries, and more. Learn how to use them with this new Sennheiser CX Manual.

Sennheiser CX Manual | Everything You Need To Know!

Sennheiser CX Manual | How to Pair / Connect?

To iOS and Android phones

Step 1: Open the lid of the charging case and take the earbuds out. After that, a “Power on” voice prompt will sound, and they will turn on automatically. A “Connected” voice prompt will sound, meaning that the earbuds are now paired with each other.

Step 2: Press and hold the multifunction touch button on both earbuds for about 3 seconds, until a red and blue light starts flashing for 1 minute approx. and a “Pairing” voice prompt will sound. That means that they are ready to pair with any device.

Step 3: Turn on Bluetooth on the desired device.

Step 4: Go to the device’s Bluetooth settings.

Step 5: Select “CX True Wireless”. If a password is needed, type “0000”.

Step 6: After that, a blue light will flash three times, a “Connected” voice prompt will sound, and the pairing will be done.

To PC (Windows)

Step 1: Turn on Bluetooth on the desired device.

Step 2: Go to the settings.

Step 3: Go to “Bluetooth and other devices”.

Step 4: Click on “Add device”.

Step 5: Open the lid of the charging case and take the earbuds out. After that, a “Power on” voice prompt will sound, and they will turn on automatically. A “Connected” voice prompt will sound, meaning that the earbuds are now paired with each other.

Step 6: Press and hold the multifunction touch button on both earbuds for about 3 seconds, until a red and blue light starts flashing for 1 minute approx. and a “Pairing” voice prompt will sound. That means that they are ready to pair with any device.

Step 7: Select “CX True Wireless”. If a password is needed, type “0000”.

Step 8: After that, a blue light will flash three times, a “Connected” voice prompt will sound, and the pairing will be done.

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Credits: Sennheiser

Sennheiser CX Manual | How to Wear?

Step 1: Take both earbuds out of the charging case.

Step 2: Identify the left and right earbuds.

Step 3: Choose the ear tips that best suit your ears.

Step 4: Insert the headphones into the inner canal of the ears.

Step 5: Rotate for the best possible comfort and best fit, and make sure that the microphone is pointing to the mouth.

Sennheiser CX Manual | How to Turn On and Off?

Turn on: Open the lid of the charging case and take the earbuds out. After that, a “Power on” voice prompt will sound, and they will turn on automatically.

Turn off: Place the earbuds into the charging case. After that, the earbuds will turn off automatically.

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Credits: Sennheiser

How to Control? / How to Operate? – Instructions

  • Play or pause music: Press the multifunction touch button on any of the earbuds one time.
  • Play the next song: Press the multifunction touch button on the right earbud two times.
  • Play the previous song: Press the multifunction touch button on the left earbud two times.
  • Turn the volume up: Press and hold the multifunction touch button on the right earbud.
  • Turn the volume down: Press and hold the multifunction touch button on the left earbud.
  • Answer an incoming call: Press the multifunction touch button on any of the earbuds one time.
  • End a current call: Press the multifunction touch button on any of the earbuds one time. A “Call ended” voice prompt will sound.
  • Reject an incoming call: Press the multifunction touch button on any of the earbuds two times. A “Call rejected” voice prompt will sound.
  • Accept an incoming call and end the current one: Press the multifunction touch button on any of the earbuds one time.
  • Reject an incoming call and continue the current one: Press the multifunction touch button on any of the earbuds two times.
  • Activate the voice assistant: Press the multifunction touch button on any of the earbuds three times.
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Credits: Scarbir

Sennheiser CX Manual | How to Activate Mono Mode?

To activate or deactivate the mono mode in these earbuds, all you have to do is to pair the earbuds to the device and take out one of the earbuds from the charging case. It will start working by itself.

Sennheiser CX Manual | How to Charge?

Earbuds

To charge the earbuds, all you have to do is to place them into the charging case and close the lid. The earbuds will start charging automatically.

Charging case

To charge the charging case, all you have to do is to connect the case to a USB charger or charging port with the included USB-A to C cable. It will start charging automatically.

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Credits: Sennheiser

Sennheiser CX Manual | LED Light Status

Earbuds

  • A red and blue light flashing for 1 minute approx.: The earbuds are now in pairing mode.
  • A blue lights flash 3 times: The earbuds are connected to the desired device.
  • A red lights flash 3 times: The connection between the earbuds and the device failed.
  • A blue light on: The earbuds are connected to a device via Bluetooth.
  • A red light on: The earbuds are not connected to a device via Bluetooth/the connection has been lost.
  • A red lights flash quickly: The rechargeable battery is almost empty.
  • A red lights flash slowly: System error (reset the earbuds).
  • A green and red light flashing: The earbuds are resetting.

Charging case

  • A yellow light flashing while charging: The case is charging.
  • A green light flashing while charging: The case is fully charged.
  • A red light flashing while charging: There was a charging error/a battery error has been detected in at least one earbud.
  • A yellow light flashing while charging with the earbuds inside: The earbuds are charging.
  • A green light flashing while charging with the earbuds inside: The earbuds are fully charged.
  • A red light flashing while charging with the earbuds inside: There was a charging error/a battery error has been detected in the charging case.
  • A green light flashing with the earbuds inside: The earbuds are fully charged.
  • A yellow light flashing with the earbuds inside: The earbuds are charging.
  • A yellow light stays on with the earbuds inside: The earbuds are fully charged but the case can’t charge a complete cycle (less than 90% of battery).
  • A red light stays on with the earbuds inside: The rechargeable batteries of the earbuds and the charging case are empty.
  • A red light flashing with the earbuds inside: There was a charging error/a battery error has been detected in the charging case.

Sennheiser CX Manual | Voice Prompts

  • “Power on”: The earbuds turn on.
  • “Power off”: The earbuds turn off.
  • “Connected”: The earbuds are connected to each other.
  • “Not connected”: The earbuds could not connect to each other.
  • “Pairing”: The earbuds are ready to pair to any device.
  • “Pairing canceled”: The earbuds could not connect to the device.
  • “Pairing successful”: The earbuds are connected to the device.
  • “Pairing failed”: The earbuds could not connect to the device.
  •  “Call rejected”: An incoming call was rejected.
  • “Call ended”: A current call has ended.
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Credits: Sennheiser

Sennheiser CX Manual | How to Reset?

Step 1: Delete all pairing records of the “CX True Wireless” from the connected device.

Step 2: Turn off Bluetooth on the device.

Step 3: Take one earbud out of the charging case and keep the other one inside of it.

Step 4: Press and hold the multifunction touch button on said earbud for about 10 seconds, or until a green and red light starts flashing and a “Pairing” voice prompt sounds.

Step 5: Place the earbud back into the charging case, and leave the lid open.

Step 6: Take the other earbud out of the charging case and keep the other one inside of it.

Step 7: Press and hold the multifunction touch button on said earbud for about 10 seconds, or until a green and red light starts flashing and a “Pairing” voice prompt sounds.

Step 8: Place the earbud back into the charging case, and leave the lid open. When a blue light flashes three times on the earbuds, and the “Pairing successful” voice prompt sounds, the resetting will be done.

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Credits: Sennheiser

A Guide To Sennheiser CX APP

The Sennheiser CX can be used with an application, called Sennheiser Smart Control. This application is available for iOS and Android devices. Through it, the user will be able to see information about the earbuds, as well as all the internal characteristics that it has, in addition to being able to change and update them.

  • First page: This is the home page, and it shows the battery percentage of the earbuds and the menu.
  • Second page: This is the equalizer, where you can change and modify the bass, tremble, and others in the earbuds.
  • Third page: Here are the devices to which the earbuds are connected. As you like, they will be able to connect or disconnect from the earbuds with a single click.
  • Fourth page: Earbuds controls. Here you will be able to see the available controls of the earbuds, also, they will be able to be modified depending on the user’s tastes.
  • Fifth page: You will be able to see all the specifications of the earbuds, as well as the possibility of changing certain factory features of these.
  • Sixth page: Here, you will be able to see the firmware version, and you will be able to update it if necessary.
  • Seventh page: Finally, there are the settings of the app, where you can choose a language, see its version and reset it if necessary.

Sennheiser CX Manual | How to Install Firmware Updates?

Step 1: Before updating, make sure that the earbuds are out of the charging case, and don’t place them into it while updating.

Step 2: Connect the earbuds to the Sennheiser Smart Control app.

Step 3: The app provides information related to available firmware updates and guides you through the installation process.

Some Common Earbuds Problems & Troubleshooting

Left / Right / One side of the earbuds have stopped working

If this happens, it may be because it is low on battery or it did not connect correctly with the device. To fix this, you can do the following:

1. Try charging the earbud that is not working or both, placing them in the charging case.

2. Try factory resetting the earbuds.

3. Check if the earbuds are operating within a normal working range

If that doesn’t work, the earbud is probably faulty, and I can go for a refund or replacement of it.

Left / Right / One side of the earbuds has a low volume

If this happens, it may be because the earbuds are dirty or the volume is set low. To fix this, you can do the following:

1. Try cleaning the earbud using a cotton swab or carefully clean the mesh with a pin.

2. Try factory resetting the earbuds.

The microphone is not working

If this happens, it can be because the microphone is muted, or the earbuds are badly positioned. To fix this, you can do the following:

If the microphone is muted, check the device microphone volume. If that doesn’t work, that means that there might be a defect in the earbud, so try replacing them or get a refund.

The earbuds are not connecting to Windows/laptop/PC

If the earbuds are earbuds not connecting, it can be because the Bluetooth on the computer has a pairing problem. To fix this, you can do the following:

1. Try disabling Bluetooth from nearby devices >>> then activate the pairing mode of the earbuds, pair and connect earbuds from Settings >>> Bluetooth & other devices >>> Add a new device >>>> select Bluetooth.

2. Try uninstalling and reinstalling the Bluetooth driver, or updating the Bluetooth driver. All can be done in Manage >>> Device Manager, reset earbuds (if available), and then repeat the step.

3. Try resetting the earbuds.

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Credits: Scarbir

FAQs

Are the Sennheiser CX waterproof?

No, the Sennheiser CX are not waterproof (IPX6 and up). They have a rating of IPX4, which means they’re splash and sweat-resistant.

Do the Sennheiser CX have a microphone?

Yes, the earbuds come with integrated microphones

Do the Sennheiser CX have a low latency/gaming mode?

No, these earbuds don’t have a low latency/gaming mode.

How to know when the Sennheiser CX are fully charged?

When the earbuds are charging, a yellow light is on the charging case. When fully charged, said light turns green.

Can the Sennheiser CX connect to PC and Laptop?

Yes, these earbuds can connect to PCs, laptops, and even tablets.

Are the Sennheiser CX noise-canceling?

No! These earbuds don’t come with noise-cancellation technology.

We hope you now know how to operate the earphone from the above Sennheiser CX Manual. Want to know anything about the earphones? Do not hesitate to ask in the comments section.