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My ANC (Active Noise Cancellation) performance seems to have only limited
effect?
Answer:
MOMENTUM True Wireless 2 blocks out ambient noise thanks to its ANC (Active Noise
Cancellation) feature which works in combination with its excellent passive noise attenuation
and perfect fit in the ear canal.
The MOMENTUM True Wireless 2 has integrated a single-mic feed-forward ANC system per
earbud side. This technology enables ANC without negative impact on sound performance (i.e.
no additional noise floor is introduced by the ANC system), nor discomfort (i.e. no ear pressure
is introduced by ANC system). In case you experience only limited ANC performance, consider
that ANC technology can only reduce ambient noise in low frequency range <1 kHz, e.g. engine
sounds. The MOMENTUM True Wireless 2's excellent passive noise isolation additionally
reduced significantly ambient noise in higher frequency ranges.
To achieve best possible sound isolation and ANC performance, it is important to choose the ear
adapters that best fits your ears.
During the OTA firmware update an error occurred?
Answer:
In case you experience any issues during the OTA firmware update of your MOMENTUM True
Wireless 2, please follow the following steps:
• Insert both earbuds into the charging case for at least 10 seconds
• Take the earbuds out of the charging case and connect them again to the Sennheiser Smart
Control app
• Repeat the OTA FW update or follow the instruction of the app
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