There are numerous reasons why an echo can be heard including the condition of the room. If the problem persists in multiple environments, check that the settings on your computer and communication channel (e.g. Skype, Microsoft Teams, etc.) list Beosound A1 2nd Generation as the source for both the speaker and microphone.
Beosound A1 2nd Generation
Why am I hearing a strong echo when my Beosound A1 2nd Generation is in speakerphone mode?
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