Sony SRS-X99 Help Manual page 77

5. Select a song from the list and start playback.
Music will be heard from the speaker.
To enjoy a more dynamic sound
Remove the speaker grille from the front of the speaker with the speaker grille detach tool (supplied).*
*
Keep the removed grille on a flat surface to prevent distortion.
Note
Do not touch the exposed part of the speaker (speaker units) after removing the speaker grille.
Related Topic
Connecting a USB flash drive
Connecting an iPhone/iPad/iPod
Connecting a Walkman
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