2009 Mercedes SLK-Class Owner'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 recording. Harman/kardon LOGIC 7® converts all two-channel stereo sound material into multi-channel surround sound. The surround information stored during the original recording is read out using LOGIC 7® and likewise distributed over the 11 channels. 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 generating a natural 360° sound experience for each passenger. Adjusting surround sound With surround sound, you can choose between LOGIC 7® On and LOGIC 7® Off. X ´ £ Sound. Select Sound £ Sound. or X X X X Changing setting: Press button C. Press button $ or % to switch Logic 7® on or off. Saving setting: Press button C. The setting is stored and the menu is exited. Exiting menu without saving: Press button ( or &. i By selecting LOGIC 7® Off, all compatible formats are played back as they are present on the medium. Due to the vehicle's spatial characteristics, an optimal sound experience is not ensured from all seats. X i Please note the following: RFor an optimal sound experience from all seats, the balance should be adjusted to the center setting with LOGIC 7® switched on. RThe best sound results are achieved when playing high-quality audio CDs. RFor MP3 tracks, the bit rate should be at least 128 kbit/s. RSurround playback cannot be activated in mono-signal sources as AM or Weatherband. It will not function for monosignal sources as, e. g. mono audio tracks on some specific audio CDs. RIn the case of poor radio reception quality, e. g. in tunnels, LOGIC 7® should be switched off, as otherwise a dynamic switchover from stereo to mono and thus temporary sound characteristic shifts can occur. RWith certain stereo recordings, the resulting sound characteristic may deviate from conventional stereo playback. 138