Sony SRS-ZR7 Help Manual page 195

Start playback on the BLUETOOTH device.
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To enjoy a more dynamic sound
Pull the lever on the bottom of the speaker in the direction of the arrow shown in the illustration below to remove the grille.
* After removing the speaker grille, do not touch the exposed part of the speaker (speaker units), and keep the removed grille on a flat surface to prevent
distortion.
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.
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