Mercedes-Benz 2009 SLK-Class Operator's Manual page 140

Controls in detail
Audio system
stereo recordings with an optimal surround
sound platform for each passenger.
®
The LOGIC 7 distributes the 5.1 surround
information over the 11-channel system
architecture to provide the optimum sound
experience from all seats. This produces
the sound characteristic as intended by the
sound engineer during the original record-
ing.
®
Harman/kardon LOGIC 7 converts all
two-channel stereo sound material into
multi-channel surround sound. The sur-
round information stored during the origi-
nal recording is read out using LOGIC 7
and likewise distributed over the 11 chan-
nels. No effects are created during this
process; only that which was already there
becomes audible.
In addition, harman/kardon LOGIC 7
moves the perceived sound source away
from the individual loudspeakers, thus gen-
erating a natural 360° sound experience
for each passenger.
By selecting LOGIC 7 ® Off, all compatible
i
formats are played back as they are pres-
ent on the medium. Due to the vehicle's
spatial characteristics, an optimal sound
experience is not ensured from all seats.
138
Adjusting surround sound
With surround sound, you can choose
®
between LOGIC 7 On and LOGIC 7
X
Sound.
´ £
or
X Select Sound Sound.
£
®
X
Changing setting: Press button C.
X
Press button
$
®
®
Logic 7 on or off.
X
Saving setting: Press button C.
The setting is stored and the menu is
exited.
X
Exiting menu without saving: Press but-
ton or &.
(
i
R
®
Off.
R
R
R
R
or to switch
%
R
Please note the following:
For an optimal sound experience from all
seats, the balance should be adjusted to
the center setting with LOGIC 7
switched on.
The best sound results are achieved
when playing high-quality audio CDs.
For MP3 tracks, the bit rate should be at
least 128 kbit/s.
Surround playback cannot be activated
in mono-signal sources as AM or Weath-
erband. It will not function for mono-
signal sources as, e. g. mono audio tracks
on some specific audio CDs.
In the case of poor radio reception qual-
®
ity, e. g. in tunnels, LOGIC 7
switched off, as otherwise a dynamic
switchover from stereo to mono and thus
temporary sound characteristic shifts
can occur.
With certain stereo recordings, the
resulting sound characteristic may devi-
ate from conventional stereo playback.
®
should be