SENNHEISER ACCENTUM PLUS ACPAEBT (01) PDF MANUAL

Please observe the following safety instructions:

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

Always include the 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.

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 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.

Always keep the product dry and do not expose it to extreme temperatures (hairdryer, heater, extended exposure to sunlight, etc.) to avoid corrosion or deformation. The normal operating temperature 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 ear cups.

Use only attachments/accessories/spare parts supplied or recommended by Sonova Consumer Hearing.

Clean the product only with a soft, dry cloth.

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.

Headphones may be exposed to moisture like rain, humidity, or sweat.

To ensure proper, safe and long-lasting performance:

Avoid contact with moisture and always keep headphones dry.

Do not use headphones in the rain/snow or in the shower.

Do not use headphones in swimming pool, sauna or during other activities with water/high air humidity (e.g. washing dishes).

Do not store headphones in airtight containers/bags together with damp objects (e.g. damp laundry) or objects that can cause condensation moisture (e.g. cold water bottles).

Never charge damp headphones. Make sure that the charging socket is free from moisture and contamination.

If your headphones have become damp or wet:

Dry headphones completely with a dry cloth.

Allow headphones to dry at room temperature for at least 24 hours before using and charging them again.

Do not continue to use the product if it is obviously defective.

These headphones have been designed as an accessory for Bluetooth compliant devices. They are intended for wireless audio communication such as music playback and phone calls via Bluetooth wireless technology.

It is considered improper use when the product is used for any application not named in the corresponding product documentation.

Sonova Consumer Hearing GmbH does not accept liability for damage arising from misuse or improper use of this product and its attachments/accessories, damages to USB devices not consistent with USB specifications, or damages resulting from loss of connection due to flat/overaged batteries or exceeding the Bluetooth range.

Observe country-specific regulations before operation.

ACCENTUM Plus around-ear headphones (Model: ACPAEBT)

USB cable with USB-C and USB-A connector, length approx. 1.2 m

Analog audio cable with 3.5 mm jack plug and 2.5 mm jack plug, length approx. 1.2 m

Carry case

Quick guide

Safety guide

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 (On/off, Voice assistant, Pairing mode – press 5s)

9. Input for analog audio cable, 2.5 mm (activates flight mode/deactivates Bluetooth)

10. Marking for right ear (R) and left ear (L) (inside ear cups)

11. Microphones for active noise cancellation ANC (2x outward, 2x inward – not visible)

Press the multi-function button (8) for 3 seconds.

The LED (5) lights up white for 5 seconds. You hear a sound signal.

If Bluetooth is activated and a paired device is available, the LED flashes white 3x and you hear the voice prompt “Connected”.

If Bluetooth is deactivated, you only hear a sound signal.

Use the touch pad (7) on the outside of the right ear cup:

Tapping: For play/pause, call management, ANC/Transparency toggle.

Horizontal swipe: For next/previous track.

Vertical swipe: For volume up/down.

Note: The touch pad function can be deactivated via the Smart Control app.

If the LED display does not light up:

Clean the charging socket.

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

Note: Voice prompt settings can be adjusted via the Smart Control app.

You hear short sound signals when the headphones:

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,

are disconnected from the connection via the audio cable or USB cable.

Note: Sound signal settings can be adjusted via the Smart Control app.

The battery is not fully charged upon delivery. Before first use, charge for a complete cycle (approx. 3.5 hours) without interruption.

1. Make sure the USB-C charging socket (6) is free from moisture and contamination. Connect the USB-C connector of the supplied charging cable to the USB socket of the headphones.

2. Connect the USB-A connector to a corresponding socket of a USB power source (e.g., wall charger, computer – to be ordered separately). Ensure the power source is connected to the power supply.

The charging process begins. The LED (5) indicates the charge status (see LED table during charging). A full charge provides up to 50 hours of playback time (Bluetooth with ANC activated).

A 10-minute charge provides approximately 5 hours of playback time.

Note: Use a compatible standard USB power supply. Some units might supply too high voltage and prevent charging. Use a unit compliant with specifications.

You can still use the headphones while charging, but charging time may be longer.

Charging is faster when the headphones are switched off.

Pairing is required to establish a Bluetooth connection. Keep the headphones close to the Bluetooth device.

Note: If switched on for the first time, the headphones automatically enter pairing mode.

1. Press and hold the multi-function button (8) for 5 seconds. The headphones switch to pairing mode. The LED (5) flashes alternately white and red.

(If the headphones were off, they will switch on first; continue holding the button).

2. Activate Bluetooth on your Bluetooth device.

3. In your device’s Bluetooth menu, search for new devices.

4. From the list of found devices, select “ACCENTUM Plus”. If necessary, enter the default pin code “0000”.

5. If pairing is successful, you hear voice prompts “Pairing successful” and “Connected”. The LED (5) flashes white 3x.

Note: If no connection is made within 2 minutes, pairing mode ends, and the headphones switch to standby. Repeat the steps if necessary.

The headphones can save profiles for up to six paired devices. Pairing a seventh device overwrites the least used one.

You need the Sennheiser Smart Control app for this.

1. Open the Smart Control app.

2. Tap “Connection management”. A list of paired Bluetooth devices appears.

3. Select the desired paired device to connect to. Ensure the device is switched on and Bluetooth is activated.

The Bluetooth audio connection is established. The app connection (Bluetooth Low Energy) remains active with the device running the app (highlighted in bold).

Note: The headphones automatically try to connect to the last two connected devices on switch-on. Audio playback is only possible from one device at a time.

Via the menu of your Bluetooth device, disconnect the connection to the headphones.

The headphones are disconnected. You hear the voice prompt “No connection”. The headphones switch to standby mode.

The free Sennheiser Smart Control app allows access to all headphone functions and settings (e.g., equalizer, ANC modes, firmware updates).

1. Download the app from the Apple App Store or Google Play (search “Sennheiser Smart Control”) or scan the QR code in the manual / visit http://www.sennheiser-hearing.com/smartcontrol.

2. Install the app on your smartphone.

3. Ensure your headphones are connected to your smartphone via Bluetooth.

4. Start the Smart Control app.

5. Follow the instructions in the app. The app recognizes the headphones and activates available settings.

Automatic switch-off: The headphones automatically switch off after 15 minutes of being taken off. This time span can be adjusted using the Smart Control app.

Manual switch-off:

Press the multi-function button (8) for 3 seconds.

You hear a sound signal. The LED (5) flashes red 3x. The headphones switch off.

For optimal sound quality, noise cancellation, and comfort:

1. Wear the headphones so the headband (2) runs over the top of your head. Check the L (left) and R (right) markings inside the ear cups (10).

2. Adjust the ear cups (3) by sliding them up or down the headband slider until:

your ears are comfortably covered by the ear pads (1),

you feel even, gentle pressure around your ears,

a snug fit of the headband on the head is ensured.

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

Via Smartphone: When connected via Bluetooth, the battery status may be displayed on your smartphone screen (depends on device/OS).

Via Smart Control App: The app displays the current battery charge status.

Via Voice Prompt: While the headphones are on (even during music/calls), press the multi-function button (8) 2x.

You hear a voice prompt: “More than xx % battery left” or “Recharge headset” if the battery is empty.

WARNING: Danger due to high volume levels! Listening at high volume can cause permanent hearing defects. Adjust volume to low before putting headphones on and avoid continuous high volume exposure.

You can adjust volume for music playback, phone calls, voice prompts, and sound signals.

While playing music, on a call, or in idle mode:

Swipe vertically up or down on the touch pad (7).

Swipe up to increase volume.

Swipe down to decrease volume.

Short swipes adjust volume in small steps; long swipes adjust in larger increments.

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

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

Note: If the voice assistant is active, adjusting headphone volume also adjusts and saves the voice assistant’s volume.

The closed design provides passive isolation. Additionally, the headphones feature Active Noise Cancellation (ANC) to reduce ambient noise.

ANC works best for continuous, low-frequency noise (e.g., motors, fans).

Speech or high-frequency noise is reduced but may remain perceptible.

ANC can be used even without Bluetooth connection or audio cable (as noise protection), provided the battery is charged.

Different ANC modes (e.g., Adaptive, Wind Noise Reduction) can be selected via the Smart Control app for optimal performance in various situations.

If unusual noise (whistling/beeping) occurs, reposition the headphones for a proper fit.

Do not cover the external microphone openings for ANC circuitry to ensure proper function and avoid noise.

Transparency Mode allows you to hear ambient sounds or have short conversations without removing the headphones (not possible during phone calls).

It complements ANC. Using the Smart Control app, you can adjust the intensity of both Transparency Mode and ANC, determining how much ambient sound reaches your ears versus focusing solely on your audio (full ANC).

Even at full Transparency Mode intensity, disturbing low-frequency noises (like aircraft noise) remain suppressed.

Press the touch pad (7) 2x.

This allows quick switching between ambient awareness (Transparency Mode) and noise cancellation (ANC).

This function is not available during an active phone call.

The intensity of both modes can be incrementally adjusted in the Smart Control app.

Using the Smart Control app, you can configure whether audio playback pauses when Transparency Mode is activated at maximum intensity (by tapping touch pad 2x).

Select the desired setting in the “Active Noise Cancellation” section of the app:

Using the Smart Control app, adjust ANC settings in the “Active Noise Cancellation” section:

Music control functions require connection via Bluetooth or USB. Some functions may not be supported by all devices/players.

Use the touch pad (7) on the right ear cup:

* only for smartphones or music players that support this function.

If music doesn’t start: Check if playback pause is activated in Transparency Mode and deactivate if necessary; Start the music app on your device.

Call functions require connection via Bluetooth. Some smartphones/apps may not support all functions. ANC is always active during calls; Transparency Mode is disabled.

Making a call:

Dial the number on your smartphone.

If the call isn’t automatically transferred, select “ACCENTUM Plus” as the audio output on your smartphone.

Accepting/Rejecting/Ending a call:

When receiving a call, you’ll hear a ring tone. Music playback pauses.

Use the touch pad (7):

To mute: Press the multi-function button (8) 1x. You hear “Mute on”.

To unmute: Press the multi-function button (8) 1x again. You hear “Mute off”.

Sidetone allows you to hear your own voice during phone calls, which can feel more natural.

This function can be activated (default setting) and its intensity adjusted or deactivated via the Smart Control app.

This requires connection via Bluetooth or USB. Functionality depends on your mobile device/apps.

1. Press the multi-function button (8) 1x.

Your device’s available voice assistant (e.g., Siri, Google Assistant) is activated. If none is available, voice dialing might activate.

2. Speak your request (e.g., “Call John”, “What’s the weather?”).

To cancel: Press the multi-function button (8) 1x.

The headphones have a sensor to detect if they are being worn.

Functions:

Music playback pauses when you take the headphones off and resumes when you put them back on.

A phone call is accepted when you put the headphones on.

A phone call is muted when you take the headphones off during the call and resumed when you put them back on.

Limitations: The sensor may not detect correctly if:

You wear the headphones around your neck covering the inside of the ear cups.

The inside of the ear cups are covered by objects or hands.

You hang the headphones over a bag edge or carry them inside a bag.

You wear the headphones over a cap, scarf, or hair covering the ear area.

You place the headphones with the inside of the ear cups facing down on a table.

To avoid sensor issues: Store headphones in the carry case when not in use; switch them off if stored outside the case.

Note: The sensor function can be deactivated via the Smart Control app. The mute function will then be unavailable when taking headphones off.

You need the Smart Control app.

In the app, select desired sound effects via the equalizer.

You can use predefined presets, define sound modes (e.g., bass boost), or create your own custom settings.

Sound effects are stored in the headphones and remain active even without the app or when connected to a different Bluetooth device.

The “Sound Check” function in the app guides you step-by-step to create customized equalizer presets.

You need the Smart Control app.

In the app settings, you can activate (default) or deactivate voice prompts and sound signals completely.

To prevent unintentional inputs (e.g., when lying down), you can deactivate the touch pad function using the Smart Control app.

Deactivate Bluetooth wireless connection when not allowed (e.g., on an aircraft during take-off/landing).

Method 1: Using the multi-function button

Press the multi-function button (8) 5x.

You hear the voice prompt “No connection”. Bluetooth is deactivated.

To reactivate Bluetooth: Press the multi-function button (8) 5x. You hear “Connected”.

Method 2: Using the audio cable

Connect the supplied audio cable. Flight mode activates automatically, and Bluetooth deactivates.

Note: ANC can still be used in flight mode if the battery is charged. Consider deactivating the touch pad to avoid accidental inputs if only using ANC.

Use the audio cable when wireless transmission is not allowed, the battery is empty, or your audio source lacks Bluetooth.

Note: Music/call/voice assistant controls are unavailable via cable. ANC requires battery charge.

1. Connect the 2.5 mm jack plug of the audio cable to the headphones’ audio socket (9). Flight mode activates, Bluetooth deactivates.

2. Connect the 3.5 mm jack plug to the audio output of your device (e.g., smartphone, airplane seat).

To disconnect: Carefully disconnect the jack plug from the headphones.

Connect headphones to a Mac/PC/mobile device via the supplied USB cable to play audio directly through them. Headphones charge automatically when connected via USB.

1. Ensure any active Bluetooth connection is disconnected.

2. Connect the headphones to your device using the USB cable (USB-C to headphone, USB-A/C to device).

3. In your device’s System Preferences or Control Panel audio settings, select “ACCENTUM Plus” as the default audio playback and/or recording device.

4. Start music playback on your device. Music plays through headphones, and the microphone can be used for recording/calls.

Store the headphones in the supplied carry case to prevent damage.

Place the headphones in the carry case as shown in the illustration (typically flat with earcups rotated inwards).

Note: If stored/transported while switched on outside the case, the Smart Pause sensor might not detect they’ve been taken off in certain situations (e.g., hanging on a bag). Switch headphones off if storing outside the case.

CAUTION: Liquids can damage the electronics. Keep all liquids away. Do not use solvents or cleansing agents.

Clean the product parts only with a soft, dry cloth.

To clean the charging socket:

Blow vigorously over the socket.

If necessary, carefully remove stuck dirt using a dry, soft brush or dry interdental brush with gentle pressure.

Replace ear pads periodically for hygiene reasons. Spares are available from Sennheiser Hearing (check website/service support).

1. Peel the old ear pad up and away from the ear cup.

2. Assign the new right ear pad to the right ear cup (R marking) and the left pad to the left ear cup (L marking).

3. Place the new ear pad onto the ear cup.

4. Press the ear pad onto the ear cup so it fixes securely in the notch of the ear cup.

If you suspect a defective battery or see a charging/battery error, stop using the product, disconnect it from power, and contact your Sonova Consumer Hearing partner for repair/replacement coordination.

Do not return a product with a defective battery unless requested. Find partners via http://www.sennheiser-hearing.com/service-support.

Firmware updates are available free via the Sennheiser Smart Control app. Always install the latest version for best performance.

1. Connect headphones to your smartphone.

2. Start the Smart Control app.

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

If a problem occurs, try the following steps:

1. **Reset the headphones:** Press and hold the multi-function button for 30 seconds until the headphones switch on again. This resets the function but keeps settings like pairing.

2. **Update firmware:** Connect to the Smart Control app and install the latest firmware.

3. **Factory Reset:** Reset the headphones to factory default settings (deletes all pairings). See “How do I reset the headphones to factory default settings?”.

4. **Check FAQ:** Visit the ACCENTUM Plus product page FAQ at http://www.sennheiser-hearing.com/download for solutions.

5. **Contact Support:** If the problem persists, contact your Sonova Consumer Hearing partner. Find partners via http://www.sennheiser-hearing.com/service-support.

Wireless operation is possible within your smartphone’s Bluetooth range (up to 10 meters line-of-sight, dependent on environment like walls).

If you leave this range, sound quality deteriorates until you hear “Lost connection” and the connection breaks.

If you immediately re-enter the range, the connection usually re-establishes automatically.

If the headphone function is disturbed, perform a reset. Individual settings like pairing are not deleted.

Press and hold the multi-function button (8) for 30 seconds until the headphones switch on again.

You can delete the stored list of paired Bluetooth devices using the Smart Control app. Follow the instructions within the app.

If a reset doesn’t resolve issues, reset to factory defaults. This deletes all pairing settings.

Easiest method: Use the Smart Control app.

Manual method:

1. Press and hold the multi-function button (8) for 25 seconds.

2. You hear a short confirmation sound.

3. You will need to pair the headphones with your Bluetooth device again.

Bluetooth

Comply with EU directives (Battery 2006/66/EC & 2013/56/EU; WEEE 2012/19/EU) and UK regulations (Battery 2015; WEEE 2013).

The crossed-out wheeled bin symbol indicates separate disposal from household waste at the end of operational life.

For packaging, follow local waste segregation rules.

Separate collection promotes reuse/recycling and prevents negative effects from hazardous substances.

Recycle electrical/electronic equipment and batteries/rechargeable batteries at end-of-life.

If batteries can be removed non-destructively, dispose of them separately (follow manual for safe removal).

Handle lithium batteries with care (fire/ingestion risks for coin cells). Minimize battery waste (use long-life/rechargeable options).

Get recycling info from your municipality, collection points, or Sonova Consumer Hearing partner.

Return electrical/electronic equipment to distributors with take-back obligations.