BMW 323i Owner's Manual page 148

1. Select "Speed volume" and press the con-
troller.
2. Turn the controller:
The adjustment is applied; the field can be
changed.
Professional LOGIC7 HiFi System*
You can select a spatial sound effect that
improves the spatial acoustics in all frequency
ranges.
1. Select "LOGIC7" and press the controller.
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2. Select "Concert hall" or "Theater".
3. Press the controller.
LOGIC7 spatial sound is switched on.
To switch off the spatial sound effect:
Select "Off" and press the controller.
LOGIC7 and the LOGIC7 logo are registered
trade marks of Lexicon, Inc., a company of the
Harman International Group.
Equalizer
You can set individual sound frequency ranges.
1. Select "Equalizer" and press the controller.
2. Move the controller to the left or right to
select the desired frequency range.
3. Turn the controller until the desired setting
is selected.