Sony SRS-X99 Help Manual page 345

Help Guide
Troubleshooting
Personal Audio System
SRS-X99
There is no sound (BLUETOOTH)
If you are connecting a personal computer to the speaker, make sure that the audio output setting of the computer is
set for a BLUETOOTH device.
Check that the speaker has established a BLUETOOTH connection with the BLUETOOTH device.
Pair the speaker and the BLUETOOTH device again.
The super tweeter speaker on the top panel produces high frequencies that exceeds the human audible range. You
may hear no sound from the super tweeter. This is not a malfunction.
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