Sony PS-LX310BT Operating Instructions Manual page 49

Adjusting the tone
You can adjust the tonal balance of the
speakers.
BASS +/– TREBLE +/–
Press TREBLE + or TREBLE –
repeatedly to adjust the treble
level.
Press BASS + or BASS –
repeatedly to adjust the bass
level.
You can adjust from –10 dB to +10 dB in 1 dB
step.
The initial setting is 0 dB.
GB
20