Philips EXP 303 Mode D'emploi page 18

Basic functions
Volume and sound
Volume adjustment
Adjust the volume by using VOL E.
Sound adjustment
1
Press DBB for a moderate bass enhancement.
is shown and dbb1 is displayed.
DBB
2
Press DBB again for a strong bass
enhancement.
is shown and dbb2 is displayed.
DBB
3
Press DBB again to switch off the bass
enhancement.
disappears.
DBB
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DBB