Multi-channel playback,surround
Choose between stereo and multi-channel playback, surround.
Setting multi-channel playback, surround
1. "CD/Multimedia", "Radio" or "Settings"
2. "Tone"
3. "Surround"

When surround is activated, multi-channel playback is simulated when a stereo audio track is played.
See also:
Hazard warning flashers
Hazard warning flashers
The button is located in the center console. ...
Under the Hood
The 640i is powered by a 315-horsepower, turbocharged 3.0-liter six-cylinder
engine. Its peak torque rating is 332 pounds-feet. BMW cites a zero to 60 mph
time of 5.5 seconds for both the coupe an ...
Closing
Recessed grips in the interior trim of the trunk
lid make it easier to pull down the lid.
Danger of pinching
Make sure that the closing path of the
trunk lid is clear; otherwise, injuries may ...
