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MOMENTUM Wireless
Around-ear headphones
M3AEBTXL
Instruction manual
Use the search function, the navigation (left) or the following links:
Start
“Product overview”
“Getting started”
“Using the headphones”
“FAQ/If a problem occurs ...”
“Specifications”
Sennheiser electronic GmbH & Co. KG
Am Labor 1
30900 Wedemark
Germany
www.sennheiser.com
Version: 01/20 A02
MOMENTUM Wireless M3AEBTXL | 1
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Important safety instructions
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.
▷ 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 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 or when performing skilled jobs).
Especially the product’s active noise cancellation can make ambi
ent noise inaudible or drastically change the perception of acoustic warning signals.
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-
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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 ear cups.
▷ Use only attachments/accessories/spare parts supplied or rec-
ommended by Sennheiser.
▷ Clean the non-leather parts of the product only with a soft, dry
cloth
Caring for leather parts
▷ Gently wipe leather parts periodically with a clean, soft cloth
dampened with water.
▷ Do not use leather polish, detergents or harsh soaps to clean
leather parts.
▷ Do not store the headphones in a damp or humid environment.
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Important safety instructions
Safety instructions for the lithium polymer rechargeable battery
WARNING
If abused or misused, the rechargeable batteries may leak.
In extreme cases, they may even present a risk of:
• heat generation,
• fire development,
•explosion,
•smoke or gas development.
Only use rechargeable batteries and chargers
recommended by Sennheiser.
Only charge the product / rechargeable batteries at
ambient temperatures between 0 °C to 40 °C/32 °F to
104 °F.
Do not heat the product / rechargeable batteries above
60 °C/140
°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.
Notes on data collection and processing and on firmware updates
This product stores individual settings such as the volume and the
Bluetooth addresses of paired devices. This data is required for the
operation of the product and is not transferred to Sennheiser or com
panies commissioned by Sennheiser and is not processed.
This product collects usage data such as switch-on cycles and operating times (e.g. music playback, ANC programs, EQ settings), which
is transferred to Sennheiser or companies commissioned by Senn
heiser via the “Sennheiser Smart Control” app in encrypted and
anonymous form, and stored and processed there. The data is pro
cessed to determine statistical parameters for the purpose of providing and maintaining functions and for product improvements. At
no time can reference be made to a specific person. If this data is not
to be transferred and processed, you can object to its use in the “Pri
vacy” section of the app menu.
Using the “Sennheiser Smart Control” app, you can update the firmware 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.
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Important safety instructions
Intended use/Liability
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.
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 consistent with the USB specifications.
Sennheiser is not liable for damages 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 country-specific regulations.
4 | MOMENTUM Wireless M3AEBTXL
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Package contents
MOMENTUM Wireless M3AEBTXL around-ear headphones
USB cable with USB-C connectors,
length approx. 1.2 m
USB adapter
USB-C to USB-A connector
Analog audio cable with 3.5 mm jack plug,
length approx. 1.4 m
Package contents
Carry case
Quick guide
Safety guide
Online you can find:
• this detailed instruction manual and additional information
(
www.sennheiser.com/download)
• the Sennheiser Smart Control app for configuring the headphones and for additional functions (www.sennheiser.com/
smartcontrol)
A list of accessories can be found on the MOMENTUM Wireless
product page at www.sennheiser.com.
Contact your local Sennheiser partner: www.sennheiser.com >
“Service & Support”.
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Product overview
OFF
ON
1
2
3
4
5
6
7
8
8
9
0A
B
D
D
D
C
E
LR
Product overview
Sheepskin headband
LED
Active noise cancellation (ANC) switch
On/off, Transparent Hearing mode
NFC antenna
Volume + button (volume up)
Multi-function button for music and call functions
Volume - button (volume down)
External microphones for active noise cancellation ANC
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Product overview
Voice assistant button;
pressing for 5 seconds activates the Bluetooth pairing
mode
Input for USB-C;
for charging and music playback/data connection
Input for analog audio cable;
when a cable is connected, flight mode is activated/Bluetooth is deactivated
Ear cups (steplessly adjustable) with internal microphones
for active noise cancellation ANC
Sheepskin ear pads
Ear cup joint with on/off function for the headphones
Microphones for phone calls
Overview of the LED display
LED Meaning; the headphones...
lights up green
for approx.
2
seconds
lights up blue
for approx. 2
seconds
lights up red
for approx.
2
seconds
... switch on
... are connected to a device via Bluetooth
... are not connected to a device via
Bluetooth or the connection has been
lost
flashes redblue for
approx. 5 min
... are in Bluetooth pairing mode
-
utes
flashes green ... indicate an incoming call
flashes red
quickly
... have a very low battery level
flashes red 3x ... switch off
pulses red
... are being charged (charge level is
very low)
pulses yellow ... are being charged
lights up green ... are fully charged
flashes red
A charging error/battery error has
occurred (>
32)
If the LED does not light up immediately during charging, clean
the charging contacts and charge the headphones until the
LED lights up again (>
10).
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Product overview
Notes on voice prompts
The headphones output voice prompts for various functions (see
examples below). Using the Smart Control app, you can change the
language 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).
Voice prompt Meaning/headphones
“Power on” switched on
“Power off” switched off
“Device (1) (2) connected” are connected to device 1 or 2
“No connection” not connected via Bluetooth
“Pairing” are in Bluetooth pairing mode
“Pairing successful” Bluetooth pairing successful
“No device found” cannot connect to a paired device
“Volume min” volume set to minimum
“Volume max” volume set to maximum
“Call rejected” incoming call rejected
“Call ended” call ended
“Mute on” Microphone is muted, active call is
put on hold
“Mute off” Microphone is reactivated
“More than xx % battery left” Rechargeable battery has the
stated charge level
“Recharge headset” Rechargeable battery is empty.
Recharge the headphones.
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Notes on vibration prompts
The headphones output vibration prompts for the following functions.
Event Comment
Incoming call Headphones vibrate only when not
put on.
Locating the headphones
using the TILE app
Using the TILE app you can make
the registered MOMENTUM 3
vibrate to locate it when it is nearby
(>
28).
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Getting started
USB-CUSB-C
“Sennheiser Smart Control”
5s
Hold
Getting started
1. 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 interrup
tion (> 10).
2. Installing the Smart Control app on 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 equalizer (>
15).
3. Connecting the headphones to a Bluetooth
device
Connect the headphones to your smartphone via Bluetooth (> 11).
4. Putting the headphones on and adjusting the
headband
For good sound quality and best possible wearing comfort, the headband can be adjusted to properly fit your head (> 19).
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Using the headphones
3 HRS
Pulsing
USB-A
USB-C
USB-C
USB-C
1
2
USB-C USB Micro-B
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 approx. 3 hours. The headphones provide 1.5
hours of playback time with a charging time of approx. 10 minutes.
Before using the headphones for the first time, charge the recharge
able battery for a complete charging cycle without interruption.
When the headphones are being charged, the LED lights up (> 7).
When the battery charge drops to a critical level, a voice prompt asks
you to recharge the headphones (“Recharge headset”).
Sennheiser recommends to charge the headphones using the supplied USB-C cable and a compatible standard USB-C power supply
unit.
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.
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Charging the headphones' rechargeable battery
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1. Connect the USB-C connector of the USB cable to the USB-C
socket of the headphones.
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Using the headphones
2. Connect the other USB-C 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 displays the charge status:
LED Meaning
pulses red Rechargeable battery is being charged
(charge level is very low)
pulses yellow Rechargeable battery is being charged
lights up
green
flashes red A charging error/battery error has
If you do not have a USB power source with a USB-C socket,
use the USB adapter (supplied) for connection to a USB-A
socket.
Rechargeable battery is fully charged
occurred (>
32)
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 your Bluetooth device supports auto pairing via NFC (Near Field
Communication), the connection is automatically established.
If your Bluetooth device does not support NFC, use the device settings for the pairing process.
If operation differs from the steps mentioned, also refer to the
instruction manual of the Bluetooth device you are using.
When you switch on the headphones for the first time, they
automatically switch to pairing mode.
Information on the Bluetooth wireless connection
The headphones are compatible with Bluetooth 5.0.
If your audio source supports one of the following high-resolution
audio encoding methods, music is automatically played in high audio
quality: aptX, aptX LL 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 eight Bluetooth devices with which they
have been paired.
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Using the headphones
If you pair the headphones with the ninth 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 headphones again.
Paired and connected Bluetooth device
-
Paired Bluetooth device (currently not connected)
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Using the headphones
< 3 cm
Pairing
ON
ON
1 2
3 4
ON
MOMENTUM 3
Connected
2s
“Pairing“
“Device (1)
connected“
“Pairing
successful“
ONOFF
Click
Pairing the headphones with a Bluetooth device using NFC
1. Activate NFC on your Bluetooth device.
2. Switch the headphones on (> 16).
3. Place your Bluetooth device close (less than 3 cm) to the NFC
antenna in the right ear cup of the headphones.
You hear the voice prompt “Pairing” and the LED flashes blue and
red.
4. Click “Yes” if a confirmation dialog for Bluetooth pairing appears
on the screen of your Bluetooth device (this step may vary
depending on your Bluetooth device).
If pairing was successful, you hear the voice prompts “Pairing
successful” and “Device (1) connected”. The LED lights up blue for
2 seconds.
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Using the headphones
Pairing
1
2 3 4 5
Connected
2s
“Pairing“
“Device (1)
connected“
“Pairing
successful“
< 20 cm
ON
OFF
Click
***
MOMENTUM 3
***
MOMENTUM 3
Keyword: 0000
Menu
Bluetooth on
Bluetooth off
Menu
Add Device
5s
Hold
Pairing the headphones with a Bluetooth device
1. Switch the headphones on (> 16) and place them close to the
Bluetooth device (max. 20 cm).
2. Press and hold the voice assistant button for 5 seconds until you
hear the voice prompt “Pairing”.
The LED flashes blue and red. The headphones 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 Bluetooth
device are displayed.
5. From the list of found Bluetooth devices, select “MOMENTUM 3”.
If necessary, enter the default pin code “0000”.
If pairing was successful, you hear the voice prompts “Pairing
successful” and “Device (1) connected”. The LED lights up blue for
2 seconds.
If no connection is established within 5 minutes, pairing mode
is terminated and the headphones switch to standby mode. If
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necessary, repeat the steps described above.
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Using the headphones
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 “Device (1) disconnected”. The head
phones switch to standby mode.
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 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 headphones via Bluetooth (> 11).
▷ Start the Smart Control app.
The Smart Control app recognizes the headphones and activates
all available settings and functions.
For further functions of the headphones, you require the apps
of the respective manufacturers:
• TILE app (> 28)
• Amazon Alexa app (> 26)
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Using the headphones
Connected
No connection
“Device (1)
connected“
“No device
found“
“Power on“
OFF
Click
ON
Power on
2s
2s
2s
Switching the headphones on
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 (>
▷ Do not continuously expose yourself to high volume
levels.
WARNING
Risk of getting caught when unfolding the ear cups!
When the ear cups are unfolded, you may get caught in
the joints and injure yourself.
▷ When unfolding the ear cups, keep sufficient distance
to the joints so that no skin is caught in the joints.
▷ Unfold the two ear cups (right and left).
The joints click into place. The headphones switch on. You hear
the voice prompt “Power on” and the LED lights up green for
2
seconds.
If a paired Bluetooth device is within the transmission range, you
hear the voice prompt “Device (1) connected”. The LED lights up
blue for 2 seconds.
20).
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Make sure that Bluetooth is already activated on your Bluetooth device when switching on the headphones.
If Bluetooth is activated and the headphones cannot find a
paired Bluetooth device within a few minutes, you hear the
voice prompt “No device found”. The LED lights up red for 2
seconds. The headphones switch to standby mode.
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Using the headphones
“Power off“
Click
OFF
2s
4s
Hold
OFF
“Power on“
“No connection“
Click
ON
2s 2s
4s
Hold
Unfolding the ear cups without switching the headphones on
▷ Press the multi-function button while unfolding the ear cups and
hold the button for at least 4 seconds.
The headphones remain switched off. You hear the voice prompts
“Power off”. The LED lights up red for 2 seconds.
To switch the headphones on again:
▷ Fold both ear cups inward and unfold them again.
The headphones switch on normally (> 16).
Switching the headphones on without Bluetooth wireless connection (flight mode)
▷ Press the voice assistant button while unfolding the ear cups and
hold the button for at least 4 seconds.
The headphones switch on without Bluetooth wireless connection. You hear the voice prompts “Power on” and “No connection”.
The LED lights up green for 2 seconds and then red for 2 seconds.
If you connect the analog audio cable to the headphones, the
flight mode is also activated (Bluetooth wireless connection is
off) (>
28).
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Using the headphones
“Power off“
1
2
OFF
3x
Switching the headphones off
▷ Fold the left ear cup and then the right ear cup inward over a
slight resistance of the joint.
You hear the voice prompt “Power off” and the LED display
flashes red 3x. The headphones switch off.
When you remove the headphones and place them on your
shoulders, the headphones switch to standby mode to save
power. When you put the headphones on again, the standby
mode is deactivated.
When the headphones are switched off, keep a minimum distance of 10 cm between the headphones and strong magnets,
as the headphones may switch on unintentionally.
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Using the headphones
"recharge
headset"
„More than xx %
battery left“
2s
Hold
Putting the headphones on and adjusting the headband
For good sound quality and 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
can be found in the ear cups.
▷ Move the ear cups up or down the headband slider until:
– your 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 and active noise cancellation ANC, the
ear pads must completely surround your ears.
R for the right side and L for the left side
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 smart
phone (depending on the device and operating system used).
The Smart Control app also displays the battery charge status.
On the headphones, you can check the battery charge status via the
voice prompts (not possible during a call):
▷ Press and hold the multi-function button for 2 seconds.
Voice prompt Meaning
“Recharge headset” The rechargeable battery is empty.
Recharge the rechargeable battery (>
10).
In addition, the LED flashes red.
“More than xx % battery
left”
The remaining battery charge is
displayed as a percentage.
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Using the headphones
„Volume max“
„Volume min“
Adjusting the volume
WARNING
Danger of hearing damage 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 perma
nently damage your hearing.
▷ Before putting the headphones on and before tog-
gling between audio sources, adjust the volume to a
low level.
▷ Do not continuously expose yourself to high volume
levels.
You can adjust the volume for music, voice prompts, and phone calls.
▷ If you are playing music or are on a call: Press the volume + or -
button to increase or reduce the volume.
When the minimum or maximum volume is reached, you hear the
voice prompt “Volume max” or “Volume min”.
-
You can also adjust the volume using the connected Bluetooth
device.
Information on 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 when ANC is activated, your headphones' sound quality is
always at its best.
You can activate or deactivate ANC when the headphones and your
audio source are connected via Bluetooth, the USB cable, or the
audio cable (provided that the battery is sufficiently charged).
If you want to create a quiet space in a noisy environment, you can
simply use the headphones – without cable and disconnected from
any Bluetooth device – with ANC activated (>
The Smart Control app allows you to select different ANC modes that
offer the optimal settings depending on the application/situation.
For example, low-frequency noise can be suppressed, wind noise
can be minimized or a possible feeling of pressure on the ears can be
avoided.
17).
20 | MOMENTUM Wireless M3AEBTXL
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Using the headphones
ON
OFF
Notes on active noise cancellation
• Continuous uniform noise, such as motor or fan noise, is particularly well suppressed.
• Speech or high-frequency noise is significantly reduced, but can
remain perceptible.
• In very quiet environments, slight noise may occur. In this case,
deactivate ANC.
• If unusual (whistling or beeping) noise occurs, take the headphones off and put them on again. Make sure that the ear cups
properly fit 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.
Activating/deactivating the active noise cancellation ANC
▷ Slide the ANC switch to the middle position to activate ANC.
The ANC mode set in the Smart Control app is activated (> 21).
▷ Slide the ANC switch to the upper position to deactivate ANC.
If you are not wearing the headphones, ANC is automatically
paused to save battery power.
Setting the ANC mode
To make full use of all the ANC settings and functions of the headphones, you require the Smart Control app (> 15).
▷ In the Smart Control app, select the desired ANC mode:
MOMENTUM Wireless M3AEBTXL | 21
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Using the headphones
ON
OFF
ANC mode
“Max” * maximum reduction directed toward the
“Anti Wind” slight reduction without
“Anti Pressure” comfortable reduction
Reduction of low-frequency
noise and background noise
disturbing wind or
movement noise
without feeling pressure in
the ears
Used ANC
microphones in the
ear cups
ear and directed
toward the outside
directed toward the
ear
directed toward the
outside
* default setting
Listening of ambient noise or conversations - activating/deactivating the Transparent Hearing function
The Transparent Hearing function allows you to still hear ambient
noise or to communicate without having to remove the headphones
when ANC is activated. This allows you to hear e.g. announcements
in the train or aircraft or to have short conversations.
▷ Slide the ANC switch to the lower position and release it to acti-
vate Transparent Hearing.
You hear two beeps. The Transparent Hearing mode set in the
Smart Control app is activated (>
sounds without having to remove the headphones.
To deactivate Transparent Hearing:
▷ Slide the ANC switch to the lower position again and release it.
You hear one beep. The ANC mode set in the Smart Control app
is activated (>
21).
Application
in noisy environments such
as aircraft/traffic
outdoors and on the go
at home or in a hotel
22). You can hear ambient
Adjusting the Transparent Hearing
22 | MOMENTUM Wireless M3AEBTXL
Page 23
Using the headphones
function
To be able to fully use Transparent Hearing, you require the Smart
Control app (>
15).
▷ Select the desired Transparent Hearing function in the Smart
Control app:
Transparent Hearing Description
“Keep music playing and
mix with ambient sound”
“No music playback, only
ambient sound”
The audio playback (e.g. music)
continues and is mixed with ambient
sounds.
The audio playback (e.g. music) is
muted and you hear only ambient
sounds.
* default setting
Listening to music using the headphones
You can listen to music when the headphones and your audio source
are connected via Bluetooth (>
cable (> 28).
11), the USB cable (> 29) or the audio
Controlling music playback
The following music playback functions are only available when the
headphones and the device are connected via Bluetooth. Some
smartphones or music players may not support all functions.
Playing/pausing music
▷ Press the multi-function button 1x.
Multi-function button Function
Press 1x Plays or pauses music
If music playback does not start:
• Check if Transparent Hearing is activated (> 22) and deactivate the function if necessary.
• Start the music playback app on your Bluetooth device.
Playing the next track
▷ Quickly press the multi-function 2x.
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Using the headphones
Multi-function button Function
Press 2x Plays the next track in the playlist
Playing the previous track
▷ Quickly press the multi-function 3x.
Multi-function button Function
Press 3x Plays the previous track in the playlist
Fast-forwarding a track
▷ Quickly press the multi-function button 2x and keep it pressed
until you have fast-forwarded to the desired position in the track.
Multi-function button Function
Press 2x and
hold
Fast-forwards a track
Rewinding a track
▷ Quickly press the multi-function button 3x and keep it pressed
until you have rewound to the desired position in the track.
Multi-function button Function
Press 3x and
hold
Rewinds a track
Making phone calls using the headphones
The following call functions are only available when the headphones
and smartphone are connected via Bluetooth. Some smartphones
may not support all functions.
Making a call
▷ Dial the desired number on your smartphone.
If your smartphone does not automatically transfer the call to the
earphones, select “MOMENTUM 3” 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 you are playing music when you receive a call, the music pauses
until you end the call.
If you have not put on the headphones and receive a call, they will
vibrate.
24 | MOMENTUM Wireless M3AEBTXL
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Multi-function button Function
„Mute on“
„Mute off“
2s
Hold
2s
Hold
OR
Using the headphones
Press 1x
Press 1x
Accepts a call
Ends a call
Voice prompt “Call ended”
Hold for 1 sec
Rejects a call
Voice prompt “Call rejected”
Redials the last number
Press 2x
Voice prompt “Redial”
(only when music playback is NOT
active)
Press 1x
Accepts an incoming call and ends
the active call
Press 2x
Puts the active call on hold and
accepts an incoming call
Press 2x
Toggles between active call and call
on hold
Muting the microphone
To mute the headphones' microphone during a call:
▷ Press the volume - button for 2 seconds.
The microphone is muted. You hear the voice prompt “Mute on”.
To continue the call and reactivate the microphone:
▷ Press the volume - or the volume + button for 2 seconds.
The microphone is reactivated. You hear the voice prompt “Mute
off”.
MOMENTUM Wireless M3AEBTXL | 25
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Using the headphones
ON/OFF
Siri, Google Assistent, ...
1x
PRESS
Putting an active call on hold
If you remove the headphones during a call, the call is automatically
put on hold and the microphone is muted. You hear the voice prompt
“Mute on” every 30 seconds.
To continue the call and reactivate the microphone, simply put the
headphones on again. You hear the voice prompt “Mute off”.
Using the voice assistant/voice dialing
▷ Press the voice assistant button once.
The available voice assistant of your smartphones is activated (*
depending on the system or app on your smartphone: Siri, Google
Assistant, ...).
▷ Ask the voice assistant your question or make a request.
To cancel the voice assistant/voice dialing:
▷ Press the voice assistant button 1x.
If you want to use Amazon Alexa as your voice assistant, you
have to configure the headphones once (>
26).
Using Amazon Alexa as voice assistant
To use Amazon Alexa as a voice assistant, you have to add the headphones to the Amazon Alexa app as a device once and then activate
Alexa via the settings of the
1. Make sure the headphones are connected to your smartphone via
Bluetooth (>
2. Start the Sennheiser Smart Control app (> 15).
3. In the Smart Control app, open the settings for your headphones
and activate Amazon Alexa for the voice assistant button.
4. Start the Amazon Alexa app and select “Add Device”.
5. From the list of found devices, select “MOMENTUM 3”.
You can now use Amazon Alexa by pressing the voice assistant
button on your headphones.
11).
Sennheiser Smart Control app:
26 | MOMENTUM Wireless M3AEBTXL
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Using the headphones
ON OFF
1 2 3
Headphone
settings
Amazon Alexa
4 5
Add Device
Momentum 3
Using the Smart Pause function
The headphones are equipped with a carrying sensor that automatically detects whether the headphones are worn or removed from
your ears. You can use the following functions:
• ANC is deactivated when you remove the headphones and activated when you put them on again.
• Music playback pauses when you remove the headphones and
continues when you put them on again.
• A call is accepted when you put on the headphones; a call is
muted when you remove the headphones during a call and
resumed when you put them on again.
You can also deactivate the function via the Smart Control app.
Adjusting sound effects/the equalizer
To be able to use the sound effects/equalizer, you require the Smart
Control app (>
▷ In the Smart Control app, select the desired sound effects via the
15).
equalizer.
The sound effects are stored in the headphones. These sound
settings are active even without using the Smart Control app, i.e.
when you are using another Bluetooth device.
MOMENTUM Wireless M3AEBTXL | 27
Page 28
Using the headphones
Setting the voice prompts/beep sounds
To be able to set the voice prompts and beep sounds, you require the
Smart Control app (>
▷ 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).
15).
Using TILE to locate the headphones
The TILE function allows you to locate the headphones at any time.
If, for example, you have misplaced the headphones, the TILE func
tion allows you to find them again quickly. For this purpose, the headphones and the smartphone (with the installed TILE app) use Bluetooth frequencies.
▷ Create a TILE user account and register the MOMENTUM Wire-
less via the TILE app.
-
Using the audio cable/activating flight mode
If you connect the audio cable, flight mode is activated and the Bluetooth wireless connection is deactivated.
Use the audio cable when:
• wireless transmission is not allowed, e.g. during aircraft take-off
and landing,
• the headphone's rechargeable battery is empty,
• your audio source doesn't offer a Bluetooth connection.
The functions for controlling music and/or calls or voice assistance
are not possible. The active noise cancellation ANC can be fully used
provided that the rechargeable battery is charged.
You can also activate the flight mode without connecting an audio
cable to the headphones (>
17).
Connecting the headphones using the audio cable
▷ Connect the 2.5 mm jack plug of the audio cable to the head-
phones' audio socket until it clicks into place. Secure the jack plug
by turning it counterclockwise.
The flight mode is activated and the Bluetooth connection is disabled.
▷ Connect the 3.5 mm jack plug to the audio output of your smart-
phone.
To disconnect the audio cable:
▷ Turn the jack plug counterclockwise and carefully pull it off.
28 | MOMENTUM Wireless M3AEBTXL
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Using the headphones
Flight mode
2.5 mm
3.5 mm
OFF
Click
Connecting the headphones using the USB cable
When you connect the headphones to a Mac/PC/mobile device
using the supplied USB cable, you can play audio content from your
Mac/PC/mobile device directly through the headphones.
The headphones are automatically charged when you connect
them to a Mac/PC/mobile device using the USB cable.
If you are using the USB cable and want to deactivate all wireless connections, you have to deactivate Bluetooth on the
headphones (>
Setting up the headphones as the default audio output device for your Mac/PC/mobile device
17).
▷ Make sure that the headphones are connected to the Mac/PC/
mobile device using the USB cable.
▷ From the Systems Preferences or Control Panel of your Mac/PC/
mobile device, select “MOMENTUM 3” as the default audio
device.
▷ Start music playback from the Mac/PC/mobile device.
The music is played through the headphones.
MOMENTUM Wireless M3AEBTXL | 29
Page 30
Using the headphones
Storing and transporting the headphones
Store the headphones in the carry case to prevent damage to the
headphones when you are not using or transporting them.
30 | MOMENTUM Wireless M3AEBTXL
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Care and maintenance
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 non-leather parts of the product only with a soft, dry
cloth
Cleaning and maintaining leather parts
Regularly clean and maintain the leather parts to keep the product in
pristine condition and increase its lifespan.
▷ Gently wipe leather parts periodically with a clean, soft cloth
dampened with water.
▷ Do not use leather polish, detergents or harsh soaps.
▷ Do not store the headphones in a damp or humid environment.
Replacing the ear pads
For reasons of hygiene, you should replace the ear pads from time to
time. Spare ear pads are available from your Sennheiser partner.
To remove the old ear pads:
▷ Pull the ear pad away from the ear cup.
If the retaining ring remains on the ear cup when the ear pad is
removed:
▷ Carefully loosen the retaining ring. If necessary, use a slotted
screwdriver to loosen the retaining ring.
To place a new ear pad on the ear cup:
▷ Assign the ear pads to the right and left side. The seam of the ear
pad has to point downwards.
MOMENTUM Wireless M3AEBTXL | 31
Page 32
Care and maintenance
Click
▷ Place the ear pad on the ear cup and align it with the notches in
the retaining ring.
▷ Using your thumbs, press the retaining ring firmly onto the ear
cup so that the retaining ring audibly snaps into place all-around.
Information on the built-in rechargeable battery
Sennheiser ensures and guarantees that the rechargeable battery
performs at its optimum upon purchase of the product. If, upon pur
chase or within the warranty period, you suspect that the rechargeable battery is obviously defective or if a charging error/battery error
is displayed (>
power supply system and immediately return the product to any
Sennheiser service partner.
Outside the warranty period, you can have the rechargeable battery
replaced for a fee by your Sennheiser service partner. Contact your
local Sennheiser partner:
www.sennheiser.com > “Service & Support”.
7), stop using the product, disconnect it from the
Installing firmware updates
Firmware updates can be downloaded free of charge from the Internet using the Sennheiser Smart Control app. Sennheiser recommends to always install the latest firmware version to ensure the
best performance of your product.
▷ Connect the headphones to your smartphone and start the Smart
Control app (>
▷ The app provides information on available firmware updates and
guides you through the installation process.
15).
-
32 | MOMENTUM Wireless M3AEBTXL
Page 33
FAQ/If a problem occurs ...
5s
Hold
Click
ON
1 2 3
„Pairing list
cleared“
OFF
5s
Hold
FAQ/If a problem occurs ...
Current list of frequently asked questions (FAQ)
Visit the MOMENTUM Wireless product page at
www.sennheiser.com/download
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 problem 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.sennheiser.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 headphones, leave the Bluetooth transmission range of the smartphone, the sound quality deteriorates
increasingly until you hear the voice prompt “Device (1) discon
nected”. At this point, the connection breaks down completely. If you
immediately re-enter the Bluetooth transmission range, the connec
tion is automatically re-established.
-
-
Deleting the Bluetooth pairing list of the headphones
1. Switch the headphones on (> 16).
2. Press and hold the voice assistant button for 5 seconds.
The headphones are in Bluetooth pairing mode. The LED flashes
blue and red.
3. Press and hold the voice assistant button again for 5 seconds.
The Bluetooth pairing list is deleted. You hear the voice prompt
“Pairing list cleared”. The LED flashes blue 3x. The headphones
then stay in Bluetooth pairing mode.
Restarting the headphones
If the function of the headphones is disturbed, perform a restart:
1. Switch the headphones on (> 16).
2. Press and hold the volume + button for approx. 25 seconds.
MOMENTUM Wireless M3AEBTXL | 33
Page 34
FAQ/If a problem occurs ...
1 2 3
25s
Hold
Click
ON
OFF
Click
ON
OFF
3. Switch the headphones off and on again.
The headphones are restarted.
Resetting the headphones to the factory default settings/Reset
The Smart Control app allows you to reset the headphones to the factory default settings (e.g. EQ settings, ANC mode).
If the TILE function is activated (> 28), the TILE settings are not reset. To reset the TILE settings, deactivate the headphones in the TILE app.
34 | MOMENTUM Wireless M3AEBTXL
Page 35
Specifications
Specifications
MOMENTUM Wireless M3AEBTXL
Ear coupling circum-aural
Transducer principle dynamic, closed-back
Transducer 42 mm
Frequency response 6 Hz to 22 kHz
Sound pressure level (SPL) 99 dB SPL/-10 dB FS (via Bluetooth)
according to EN 50332-2
118 dB SPL/1 V/1 kHz (via cable)
Impedance active mode: 470 Ω
passive mode: 100 Ω
THD (1 kHz, 100 dB SPL) < 0.3 %
Noise cancellation ANC technology with 4 pick-up
microphones
Pick-up pattern
(speech audio)
Power supply built-in rechargeable lithium-polymer
Charging time of
rechargeable battery
Operating time 17 hours (Bluetooth and ANC
Temperature range operation: 0 to +55 °C
Relative humidity operation: 25 to 75%, non condensing
Weight (headphones) approx. 305 g
Magnetic field strength 10.5 mT
2-mic beamforming array
battery: 3,7 V, 600-700 mAh
USB charging: 5 V⎓, 330 mA
approx. 3 hours
activated)
charging: 0 to +40 °C
storage: –25 to +70 °C
storage: 10 to 90%
Bluetooth
Version Bluetooth 5.0 compatible, class 1, BLE
Transmission frequency 2,400 to 2,483.5 MHz
Modulation GFSK, π/4 DQPSK, 8DPSK
Output power 10 mW (max)
Profiles HSP, HFP, AVRCP, A2DP, DIS, BAS
Codec aptX, aptX LL, AAC, SBC
Device name MOMENTUM 3
LE-MOMENTUM 3 (Bluetooth Low
Energy only)
NFC
Frequency 13.56 MHz
Modulation ASK
Output power within 500 μV/m
MOMENTUM Wireless M3AEBTXL | 35
Page 36
Manufacturer Declarations
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 specific requirements
EU declaration of conformity
• RoHS Directive (2011/65/EU)
Hereby, Sennheiser electronic GmbH & Co. KG declares that the
radio equipment type M3AEBTXL is in compliance with the Radio
Equipment Directive (2014/53/EU).
The full text of the EU declaration of conformity is available at the following Internet address: www.sennheiser.com/download.
Notes on disposal
• WEEE Directive (2012/19/EU)
• Battery Directive (2006/66/EC & 2013/56/EU)
The symbol of the crossed-out wheeled bin on the product, the battery/rechargeable battery (if applicable) and/or the packaging indicates 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 equipment, batteries/rechargeable batteries (if applicable) and packagings is used to promote the reuse and recycling and to prevent negative 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
Apple, the Apple logo, iPhone, iPod, iPod touch, iPad, 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 with a license from Aiphone K.K.
The Bluetooth® word mark and logos are registered trademarks
owned by the Bluetooth SIG, Inc. and any use of such marks by Senn
heiser electronic GmbH & Co. KG is under license.
The aptX mark and the aptX logo are trademarks of CSR plc or one of
its group companies and may be registered in one or more jurisdic
tions.
Android and Google Play are registered trademarks of Google Inc.
electronic GmbH & Co. KG.
-
-
-
-
36 | MOMENTUM Wireless M3AEBTXL
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Manufacturer Declarations
The N-Mark is a trademark or registered trademark of NFC Forum,
Inc. in the United States and in other countries.
Amazon, Alexa and all related logos are trademarks of Amazon.com,
Inc. or its affiliates.
TILE and the TILE design are trademarks of Tile, Inc.
Other product and company names mentioned in the user documentation may be the trademarks or registered trademarks of their
respective holders.
Open Source license terms and conditions
FIPS 180-2 SHA-224/256/384/512 implementation
Last update: 02/02/2007
Issue date: 04/30/2005
HMAC-SHA-224/256/384/512 implementation
Last update: 06/15/2005
Issue date: 06/15/2005
Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the doc
umentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRAN
TIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDI
RECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROF
ITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIA
BILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
-
-
-
MOMENTUM Wireless M3AEBTXL | 37
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