Audio 20 audio functions - GF82.60-P-2011GZ

MODEL 164.1/8 except CODE (494) USA version except CODE (498) Japan version with CODE (523) MB Audio 20 radio up to Model Year 2008 

Radio 

The roof antenna module (A2/93) filters the amplitude modulation (AM) and frequency modulation (FM) signals, amplifies them, and transmits them to the radio (A2). The AM and FM signals are demodulated in the radio receiver and the wanted signal is amplified and output over the vehicle speakers. With code (810) Sound system, the audio signals are digitized and transferred from the radio to the amplifier for sound system (N40/3) via the Media Oriented System Transport (MOST). There, the audio signals are processed, amplified and then output to the vehicle speaker.

Radio functions 

• Receiver for FM and AM signals from radio stations
• AM interference suppression
• SEEK (automatic station search)
• Automatic station search for traffic stations after the loss of a TP station (background scan)
• Generation of the signal for the intermediate frequency (IF [ZF]) feedback (for activating the diversity processor in the roof antenna module, only in the FM band)
• RDS-EON (reception of TP stations belonging to the same station network)
• Last Mode (when switched on again, the system tunes to the radio station that was active last)
• Tune (manual tuning)
• Selection of the preferred radio station (using the buttons of the radio and the function keys of the multifunction steering wheel (MFL), the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group (S111))

Playing audio CDs 

The single-slot drive beneath the display and the CD changer (A2/6) (code (819) 6-disk CD changer) can play CD audio media (in Red Book Audio format). The following can be controlled with the menu:

• "TrackMix" (Off, CD, all CDs in CD changer)
• "Repeat" (Off, Track, CD)
• Track skip forward and backward
• Manual title entry
• Stop and Play (for mute only)
• Track search forward and backward
• Intro Scan
• Automatic CD reload (when medium is not removed from slot after 20 seconds)
• Display of time, title and number of all the pieces of music
• Track number of the music track currently playing
• Repeat status, track switch, play switch, random play switch

With code (819) 6-disk CD changer, the radio automatically displays which CD slots contain a CD. Here the CD changer slots are depicted numbered accordingly (CD1 to CD6). User guidance for controlling the CD functionality and displaying supplemental information appears in the radio display. The most important information is displayed in the instrument cluster (A1). The most important functions can also be controlled using the buttons on the multifunction steering wheel (left multifunction steering wheel button group, right multifunction steering wheel button group).

An external analog audio source can be connected to the radio via the AUX jack in the glove box. Data exchange via a discrete line.