Sennheiser ACCENTUM Plus Wireless Bluetooth Headphones User Manual

Sennheiser ACCENTUM Plus Wireless Bluetooth Headphones

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 a 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. Headphones of the Sennheiser brand sound exceptionally good even at low and medium volume levels.
•  The product generates stronger permanent magnetic fields that could cause interference with cardiac pacemakers, implanted defibrillators (ICDs) and other implants. Always maintain a distance of at least 3.94″/10 cm between the product component containing the magnet 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 choking hazard.
• Do not use the product in an environment that requires your special attention (e.g. in traffic). Especially the product’s active noise cancellation can make ambient sounds inaudible or drastically change the perception of acoustic warning signals.

Preventing damage to the product and malfunctions

• Always keep the product dry and avoid exposing it to extreme temperatures (hairdryer, heater, prolonged exposure to sunlight, etc.) to prevent corrosion or deformation. The normal operating temperature is 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 ear cups.
• Use only attachments/accessories/spare parts supplied or recommended by Sonova Consumer Hearing.
• Clean the product only with a soft, dry cloth.

Safety instructions for Lithium rechargeable batteries

Warning:

If abused or misused, rechargeable batteries may leak. In extreme cases, they may even present a risk of:

• explosion
• heat and fire development
• smoke and/or gas development
• damage to health and/or the environment

Product Overview

ACCENTUM Plus

Model: ACPAEBT

1. Ear pads
2. Headband, steplessly adjustable
3. Ear cups
4. Speech microphones (2 pcs.) for phone calls
5. LED display
6. USB-C socket for charging or streaming via PC/Mac
7. Touch pad (outside of the right ear cup)
8. Multi-function button of the headphones:
   • On/off button
   • Voice assistant button
   • Pairing button: pressing for 5 seconds activates the Bluetooth pairing mode
9. Input for analogue audio cable, 2.5 mm; when a cable is connected, flight mode is activated/Bluetooth is deactivated
10. Marking for the right ear (R) and for the left ear (L) (inside the ear cups)
11. Microphones for active noise cancellation ANC; 2x directed outward, 2x directed inward (not visible)

Overview of the smart control

Switch on the headphones

• Press the multi-function button for 3 seconds

Gesture control via the touch pad

• Tapping
• Horizontal swipe
• Vertical swipe Note: You can also deactivate the touch pad function, see: > 26.

Overview of the LED display

Note: The headphones are equipped with a sensor that automatically detects whether the headphones are worn or taken off from your ears (Smart Pause function). You can find more information here: > 25.

During operation

During phone calls

During charging

Note: 

If the LED display does not light up:

• Clean the charging socket (> 30).
• Charge the rechargeable battery until the LED display lights up again (at least 30 minutes) (> 11). If the rechargeable battery is completely discharged, it may take several minutes for the LED display to indicate the charging process.

Overview of sound signals and voice prompts

The headphones output voice prompts and sound signals in case of various events.

Note: Via the Smart Control app, you can adjust settings for the voice prompts and sound signals (> 26).

You hear short sound signals when the headphones are are

• are switched on or off,
• are in pairing mode (melody),
• detect devices in the pairing list,
• Cancel the pairing process,
• receive a gesture via the touch pad (increasing the volume, starting/pausing music playback, accepting/holding/rejecting calls, adjusting the ANC function or the Transparency Mode).
• receive an incoming call (ring tone),
• are connected to a device via the audio cable or USB cable.   ThThey ey
• are disconnected from the connection via the audio cable or USB cable.

Getting started

Charging the rechargeable battery

The headphones’ rechargeable battery is not fully charged upon delivery.

• Before using the headphones for the first time, charge the rechargeable battery for a complete charging cycle without interruption (> 11).

Connecting the headphones to a Bluetooth device

• Connect the headphones to your smartphone via Bluetooth (> 12).

Smart Control app for your smartphone

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 equaliser (> 15).

Putting the headphones on and adjusting the headband

For good sound quality and the best possible wearing comfort, the headband can be adjusted to properly fit your head (> 17).

Using the headphones

Information on the rechargeable battery and the charging process

The headphones have a built-in rechargeable battery. A complete charging cycle takes approximately. 3.5 hours. The charging time can vary depending on the power source used and the ambient temperature. Before using the headphones for the first time, charge the rechargeable battery for a complete charging cycle without interruption.

When the headphones are being charged, the LED display lights up (> 8). Once the headphones are 100% charged, the LED lights up green for 5 minutes and then goes off. When the battery charge drops to a low level, the voice prompt “Recharge headset” asks you to recharge the headphones. If the headphones are not charged, the voice prompt will be repeated every 10 minutes until the headphones switch off.

Sonova Consumer Hearing recommends using the supplied USB cable and a compatible standard USB power supply for charging the headphones.

While the headphones are being charged, you can still listen to music or make phone calls. In this case, however, the charging time may be longer.

At the end of its operational lifetime, this product with its built-in rechargeable battery must be disposed of separately from normal household waste. You can find more information here: > 35.

Note: Some USB power supply units can supply too high a voltage, which causes the headphones not to charge. In this case, use a USB power supply unit that complies with the Specifications (> 34) to charge the headphones.

Charging the headphones’ rechargeable battery

1. Make sure that the charging socket is free from moisture and contamination. Connect the USB-C connector of the charging cable to the USB socket of the headphones.
2. 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 charging process of the headphones begins. The LED display indicates the charge status.

If the LED display does not light up:

• Clean the charging socket (> 30).
• Charge the rechargeable battery until the LED display lights up again (at least 30 minutes) (> 11). If the rechargeable battery is completely discharged, it may take several minutes for the LED display to indicate the charging process.

Note: You can speed up the charging process by charging the headphones when they are switched off.

Note: If you disconnect the USB connection during or after charging, you will hear a voice prompt informing you of the remaining battery life.

Connecting the headphones to a Bluetooth device

To be able to use the Bluetooth connection, you must register both devices (headphones and e.g. smartphone) once. This process is called pairing.

If the operation differs from the steps mentioned, also refer to the instruction manual of the Bluetooth device you are using.

Note: If you switch on the headphones for the first time (the pairing list is empty), they automatically switch to pairing mode.

Information on the Bluetooth wireless connection

The headphones are compliant 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™ Adaptive or AAC. Otherwise, the headphones will play your music in normal audio quality (SBC).
Paired devices establish the Bluetooth wireless connection immediately after switch-on and are ready for use.

On switch-on, the headphones automatically try to connect to the last two connected Bluetooth devices. The headphones 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 headphones with the seventh Bluetooth device, the saved connection profile of the least used Bluetooth device will be overwritten. If you want to re-establish a connection with the overwritten Bluetooth device, you have to pair the headphones again.

Pairing the headphones with a Bluetooth device

Note: If you switch on the headphones for the first time (the pairing list is empty), they automatically switch to pairing mode.

In order for you to pair the headphones with a Bluetooth device, the headphones have to be close to the Bluetooth device.

1. Press the multi-function button for 5 seconds.
   The headphones switch to pairing mode. The LED flashes alternately white and red.
   Note: If the headphones were switched off, they will switch on first. In this case, you have to press and hold the multi-function button longer.
2. Activate Bluetooth on your Bluetooth device.
3. Via the menu of your Bluetooth device, start the search for new Bluetooth devices.
   All active Bluetooth devices in the proximity of your Bluetooth device are displayed.
   Note: By default, the name of the headphones is “ACCENTUM Plus”. You can individually adjust the name in the Smart Control app (> 15).
4. From the list of found Bluetooth devices, select “ACCENTUM Plus”. If necessary, enter the default pin code “0000”.
5. If pairing was successful, you hear the voice prompts “Pairing successful” and “Connected” one after the other. The LED flashes white 3x. Note: If no connection is established within 2 minutes, pairing mode is terminated,,  ed and the headphones switch to standby mode. If necessary, repeat the steps described above.

Switching the connection to paired Bluetooth devices/“Connection management”

To selectively switch the audio connection to paired Bluetooth devices using the “Connection management” function, you require the Smart Control app (> 15).

• In the Smart Control app, tap “Connection management”.
  The list of Bluetooth devices paired with the headphones appears.
• From the list, select the paired device to which you want to connect the headphones. Make sure that the desired device is switched on and Bluetooth is activated.
  The Bluetooth audio connection between the desired Bluetooth device and the headphones is established.
  The app connection between the device with the Smart Control app installed and the headphones remains active (only Bluetooth Low Energy for communication between app and headphones, the device name is highlighted in bold).

Note: The “Connection management” function also allows you to selectively delete pairing information of devices without resetting the headphones to the factory default settings.

Disconnecting the headphones from a Bluetooth device

• Via the menu of your Bluetooth device, disconnect the connection to the headphones.
  The headphones are disconnected from the Bluetooth device. You hear the voice prompt “No connection”. The headphones switch to standby mode.

Note: To delete the Bluetooth pairing list of the headphones: > 33.

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. Alternatively, you can use your smartphone to scan the following QR code or to call up the following Internet site: www.sennheiser-hearing.com/smartcontrol

• Google Play Store: click
• Apple App Store: click

• Connect your smartphone to the headphones via Bluetooth (> 12).
• Start the Smart Control app.
• Follow the instructions in the app.
  The Smart Control app recognises the headphones and activates all available settings and functions.

Switching the headphones on

Warning

Danger 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 (> 18).
• Do not continuously expose yourself to high volume levels.

• Press the multi-function button for 3 seconds.
  The LED lights up white for 5 seconds. You hear a sound signal. If Bluetooth is activated on the headphones and a paired device is available, the LED flashes white 3x, and you hear the voice prompt “Connected”.
  If Bluetooth is deactivated on the headphones (> 26), you only hear a sound signal. The active noise cancellation ANC may be activated (> 21). Note: Make sure that Bluetooth is already activated on your Bluetooth device when switching on the headphones.
  Note: If Bluetooth is activated and the headphones cannot find a paired Bluetooth device within a few minutes, you hear the voice prompt “No connection”. The LED flashes red 3x. The headphones switch to standby mode.

Switching the headphones off

Automatic switch-off

After taking off the headphones, they automatically switch off after 15 minutes. You can adjust the time span using the Smart Control app (> 15).

Manual switch-off

• Press the multi-function button for 3 seconds.
  You hear a sound signal. One LED flashes red 3x. The headphones switch off.

Putting the headphones on and adjusting the headband

For good sound quality, the best possible noise cancellation and the best possible wearing comfort, the headband can be adjusted to properly fit your head.

• Wear the headphones so that the headband runs over the top of your head. The markings for the right side (R) and for the left side (L) can be found on the inside of the ear cups.
• Move the ear cups up or down the headband slider until: Yourr ears are comfortably covered by the ear pads,
  • You feel even, gentle pressure around your ears,
  • A snug fit of the headband on the head is ensured.

For optimal sound quality, the ear pads must surround your ears.

Retrieving information on the battery charge status

When the headphones are connected to your Bluetooth device, the battery charge status can be displayed on the screen of your smartphone (depending on the device and operating system used).

The Smart Control app also displays the battery charge status.

On the headphones, you can retrieve information on the battery charge level via the voice prompts (also possible while listening to music or talking on the phone, as long as you have the headphones on):

• Press the multi-function button 2x.
  You hear a voice prompt informing you of the remaining battery life. Depending on the battery life of the headphones, the LEDs flash or light up.

Adjusting the volume

 Warning

Danger due to high volume levels!

Listening at high volume levels can lead to permanent hearing defects. Toggling between the audio sources may cause enormous volume jumps that can permanently damage your hearing.

• 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.

You can adjust the playback volume for music and for phone calls.

• If you are playing music, are on a call, or if the headphones are in idle mode (i.e. you are neither playing music nor are on a call): Swipe vertically up or down on the touch pad to increase or reduce the volume for music, voice prompts and sound signals.

When the maximum or minimum volume is reached, you hear the voice prompt “Volume max” or “Volume min”.
Depending on the length of the swipe motion, you adjust the volume in smaller increments (short swipe motion) or larger increments (long swipe motion).

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

Note:  If you have activated the voice assistant (> 24) and then change the volume of the headphones, the volume of the voice assistant is adjusted accordingly and saved permanently.

Information on the active noise cancellation ANC

Due to its closed design, the headphones offer effective passive isolation from ambient noise.

In addition, the headphones have an active noise cancellation (ANC) function, which allows you to reduce ambient noise to a minimum. Even with ANC, the sound quality of your headphones is always at its best.

If you want to create a quiet space in a noisy environment, you can simply use the headphones – without connected cables and without Bluetooth devices – as noise protection by using ANC (> 21).

With the Smart Control app, you can select different ANC modes that provide the optimal settings for your application situation.

Notes on active noise cancellation

• Continuous and 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.
• Ian f an unusual (whistling or beeping) noise occurs, take the headphones off and put them on again. Make sure that the ear cups fit properly around your ears.
• 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.

Information on the Transparency Mode – Hearing ambient sounds or conversations

With the Transparency Mode activated, you can hear ambient sounds or communicate without having to remove the headphones (not possible when making phone calls). This allows you to hear, e.g. announcements in the train or aircraft or to have short conversations.

The Transparency Mode optimally complements the active noise cancellation ANC. With the Smart Control app, you can gradually adjust the intensity of the Transparency Mode and the ANC. In this way, you determine how much ambient noise reaches your ears or whether you want to listen exclusively to your music (ANC at full intensity).

When you use the Transparency Mode at full intensity, disturbing sounds, e.g. low-frequency noise such as aircraft noise, are always suppressed so that you can stay relaxed and in touch with your surroundings.

Switching between the active noise cancellation ANC and the Transparency Mode

You can use the gesture control on the touch pad to switch between the active noise cancellation ANC and the Transparency Mode, e.g. if you want to transition from ambient awareness to idle mode as quickly as possible.

This function is not available during an active call, see: > 23.

• To switch between the modes, press the touch pad 2x.

Note: In the Smart Control app, the intensity of the Transparency Mode and the active noise cancellation remains incrementally adjustable (> 21).

Care and maintenance

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.
• Clean the parts of the product only with a soft, dry cloth.
  To clean the charging socket:
• Blow vigorously over the charging socket.
• If necessary, carefully remove any stuck dirt from the charging socket using a dry, soft brush or a dry interdental brush. Only apply gentle pressure when doing so.

Replacing the ear pads

For reasons of hygiene, you should replace your ear pads from time to time. Spare ear pads are available at www.sennheiser-hearing.com/accentum-plus (to purchase online or contact your local Sonova Consumer Hearing partner: www.sennheiser-hearing.com/service-support)

• Peel the ear pad up and away from the ear cup.
• Assign the right ear pad to the right ear cup and the left ear pad to the left ear cup.
• Place the new ear pad onto the ear cup.
• Press the ear pad onto the ear cup so that the ear pad is fixed in the notch of the ear cup.

Information on the built-in rechargeable battery

Sonova Consumer Hearing GmbH ensures and guarantees that the rechargeable batteries perform at their optimum upon purchase of the product. If, upon purchase 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 Sonova Consumer Hearing partner. Your Sonova Consumer Hearing partner will coordinate the repair/replacement with you.

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.

At the end of its operational lifetime, this product with its built-in rechargeable battery must be disposed of separately from normal household waste. You can find more information here: > 35.

Installing firmware updates

Firmware updates can be downloaded free of charge from the Internet using the Sennheiser Smart Control app. Sonova Consumer Hearing recommends always installing the latest firmware version to ensure the best performance of your product.

• Connect the headphones to your smartphone and start the Smart Control app (> 15).
• The app provides information on available firmware updates and guides you through the installation process.

Specifications

Model: ACPAEBT

Bluetooth

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Sennheiser ACCENTUM Plus Wireless Bluetooth Headphones- FAQs