Sony SRS-XB10 Help Manual page 21

Hint
If the devices cannot connect, enter pairing mode to connect.
(The speaker can be paired with up to 8 devices. If the speaker is paired with multiple devices, it is necessary to enter pairing mode to connect.)
Note
When the speaker made a connection automatically with the last connected BLUETOOTH device, the BLUETOOTH function may not work
properly. In this case, terminate the BLUETOOTH connection by operating the connected BLUETOOTH device and reestablish a connection.
Related Topic
How to make a wireless connection with BLUETOOTH devices
Pairing and connecting with a BLUETOOTH device
Listening to music of a device via BLUETOOTH connection
Terminating the BLUETOOTH connection (After use)
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