Sony SRS-X88 Help Manual page 275

4. Tap and select [SRS-X88] on the Xperia.
5. Start playing back music on the Xperia, and adjust the volume.
The selected song will be heard from the speaker.
If playback does not start, perform the process again from step 1.
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.
Hint
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