Sony SRS-HG1 Help Manual page 125

Stop playback on the BLUETOOTH device and turn down the volume of the device beforehand. When pairing is completed, loud sound may output
from the speaker. Otherwise, you may experience sudden loud sound from the speaker when music is played back for the first time after pairing.
The pairing mode of the speaker is released after about 5 minutes and the BLUETOOTH indicator flashes slowly. However, when pairing
information is not stored in the speaker, or you turn on the speaker for the first time after purchase, pairing mode is not released. If the pairing
mode is released before finishing the process, repeat from step
Once BLUETOOTH devices are paired, there is no need to pair them again, except in the following cases:
Pairing information has been deleted after repair, etc.
The speaker is already paired with 9 devices and another device is to be paired.
The speaker can be paired with up to 9 devices. If a new device is paired after 9 devices have already been paired, the paired device with the
oldest connection time is replaced by the new one.
The pairing information with the speaker has been deleted from the BLUETOOTH device.
The speaker is initialized.
All pairing information will be deleted. If you initialize the speaker, it may not be able to connect your iPhone/iPod touch or PC. In this case,
erase the pairing information of the speaker on your iPhone/iPod touch or PC, and then perform the pairing procedure again.
The speaker can be paired with multiple devices, but can only play music from one paired device at a time.
The passkey of this speaker is "0000." If a passkey besides "0000" is set on the BLUETOOTH device, pairing cannot be done with the speaker.
Related Topic
Listening to music on a device via a BLUETOOTH connection
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