Sony SRS-ZR5 Help Manual page 187

Start playback on the BLUETOOTH device.
3
Hint
After SongPal is downloaded and installed to your smartphone, iPhone, etc., you can use your smartphone, iPhone, etc. as a remote control to
operate devices connected to the speaker.
SongPal has no function to play music via a BLUETOOTH connection. Play music with your BLUETOOTH device such as smartphone, PC, etc.
Depending on the BLUETOOTH device, it may be necessary to adjust the volume or set the audio output setting on the connected device.
Note
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.
If the communication condition is poor, the BLUETOOTH device may react incorrectly to the operation on the speaker.
Related Topic
Selecting the BLUETOOTH audio streaming playback quality (Codec)
Terminating the BLUETOOTH connection (After use)
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