SENNHEISER Headphones & Speakers
Step 1: Get your Sennheiser Headphone / Speaker into Bluetooth Pairing Mode.
Different products tend to have a different-looking pairing mode... but not to worry, see below for the pairing mode for a list of Sennheiser's most popular products.
- Sennheiser HD 4.50 BTNC (and HD 4.40): This product supports aptX codec. To enter pairing mode, make sure that the headphone has been turned OFF. Press & hold the power button for 4 seconds until you see the LED indicator flashing RED & BLUE.
- Sennheiser PXC 550 Wireless: Press & hold the EffectMode Control button for 4 seconds or until you hear tones and the voice prompt "pairing". The LED indicators will flash WHITE in sequence.
- Sennheiser HD1 M2 AEBT: This product supports aptX-HD codec. To enter pairing mode, please make sure that the headphone has been turned OFF. Press & hold the power button until you hear a "pairing" voice prompt. The LED indicator will flash RED & BLUE.
- Sennheiser Momentum True Wireless: Put the headphones on. Simultaneously touch and hold the right and the left touch control panels for 5 seconds until you hear the voice prompt “Pairing” and a beep.
Step 2: Put your Avantree Bluetooth transmitter into Pairing Mode as well.
Please refer to its user guide if you're not sure how. With both devices in pairing mode, keep them close to each other and give them a few seconds. Please check their respective LED indicators to make sure that they've connected.Please contact us at support@avantree.com if you have any question.
In case you prefer Learning through Videos:
If no luck to get them paired, please Factory Reset/Clear Pairing history of both devices and try again.
Step 1: Factory Reset/Clear pairing history of your Sennheiser Headphone / Speaker
Sennheiser HD 4.50 BTNC (and HD 4.40):
1. Go to pairing mode in your HD 4.50 BTNC (and HD 4.40)
2. Simitaneously press the multifunction button and the power button for 4 seconds. The LED flashes purple 3 times. The headphone are disconnected from all the devices and immediately go into pairing mode.
Sennheiser PXC 550 Wireless: Ensure that Bluetooth is activated on the headphones when performing this procedudre.
1. Restart the headphones by switching them off and on again
2. Press the Effect Mode control button for 4 seconds. You hear tones and the voice prompt "phone X disconnected" and "pairing" and the LEDs flash white in sequence.
3. Press the Effect Mode control button again for 4 seconds until you hear voice prompt "pairing list cleared". The LEDs flash white in sequence. The headphone are disconnected from all the devices and immediately go into pairing mode.
Sennheiser HD1 M2 AEBT:
1. Switch the headphones on. Press the power button and keep it pressed until you hear the voice prompt "pairing" and LED flashes blue and red.
2. Simitaneously press the 3-way multifunction button and the power button for 3 seconds. The LED flashes purple 3 times and headphones change to pairing mode. The pairing settings are cleared from the headphones.
Sennheiser Momentum True Wireless:
1. Make sure the contacts in the earbuds and in the charging case are clean and make contacts(the LED of the charging case lights up when you insert the earbuds into the charging case). If necessary, clean the contacts.
2. Use the USB cable to connect the charging case to a power source.
3. Insert the earbuds into the charging case, and within 60 seconds, touch and hold the right and the left touch control pannel for at least 30 seconds. The earphone are reset to the factory default settings.
- Note: You can also reset the earphones to the factory default settings using the Smart Control app.
2. Factory Reset Avantree Bluetooth Transmitter:
Please refer to its user guide if you're not sure how.Once this is done, the Oasis Plus will re-enter pairing mode.
Please contact us at support@avantree.com if you encounter any issue.
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