Sony SRS-X99 Help Manual page 324

Help Guide
Troubleshooting
Personal Audio System
SRS-X99
No sound/Sound from only one speaker/Low sound level
Check that both the speaker and the connected device are turned on.
Turn up the volume of the speaker and the connected device.
Check that the connected device is playing back.
If the device is connected to the AUDIO IN jack, check that both plugs of the audio cable (not supplied) are firmly
inserted into the speaker and the connected device.
If the device that is connected to the AUDIO IN jack is monaural, sound will only be output from the left speaker.
Keep the speaker away from metal objects.
The super tweeter speaker on the top panel produces high frequencies that exceed the human audible range. You
may hear no sound from the super tweeter. This is not a malfunction.
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