GL 320 BLUETEC (164.825) V6-3.0L DSL Turbo (642.820) (2009)
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Depending on the equipment installed one of the following control units will be installed, hereafter referred to as the "audio unit":
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Radio (A2), with code (510) Audio 20 including CD changer
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Radio and navigation unit (A2/56), with code (525) MB Audio 50 APS radio or with code (511) Audio 50 APS with DVD changer
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COMAND operating, display and control unit (A40/3), with code (528) COMAND including DVD changer, with code (527) COMAND APS with
single DVD drive (with navigation) or with code (512) COMAND APS including DVD changer
Task
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Receiving signals
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Decoding signals
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Supporting and amplifying signals
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Transmitting signals
Receiving signals
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Direct lines
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Media Oriented System Transport (MOST)
Discrete lines
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Power supply via circuit 31 and circuit 30g over one direct line each
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Electronic wake-up for MOST over discrete line
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Audio mute by telephone mute from external mute signal (e.g. telephone mute or emergency call system mute (with code (359) TELE AID
emergency call system)) over discrete line
MOST
The amplifier for sound system is a subscriber of the MOST and receives the Digital Transmission Content Protection (DTCP) copy- protected audio
signals from the following components, for example:
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"Audio unit"
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Digital Audio Broadcasting control unit (N87/3), with code (537) Digital radio and with code (833) Great Britain version
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High-Definition tuner control unit (N87/8), with code (517) HD radio
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Media interface control unit (N125/1), with code (518) Media interface
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TV combination tuner (analog/digital) (A90/1), with code (863) TV tuner digital/analog
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TV digital tuner (A90/3), with code (865) TV tuner
Decoding signals
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Decoding DTCP copy-protected audio signals on basis of newest Digital Signal Processing (DSP) technology
DSP means that for the audio range, audio tracks are processed using mathematical algorithms with the objective of improving the acoustic sound
characteristics.
Supporting and amplifying signals
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Supporting Logic 7
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Supporting 2 stereo entertainment channels and 3 announcement channels (e.g. for voice output of navigation instructions, etc.)
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Amplifying decoded audio signals
Transmitting signals
Discrete lines
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Output of signal tones (BEEPs), digital multiple channel output and output of decoded, volume-adapted and amplified audio signals over the
following speakers:
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Left front door speaker (H4/5)
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Right front door speaker (H4/6)
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Left rear door speaker (H4/3)
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Right rear door speaker (H4/4)
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Left front door tweeter (H4/33)
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Right front door tweeter (H4/34)
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Left rear door tweeter (H4/35)
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Right rear door tweeter (H4/36)
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Center cockpit speaker (centerfill) (H4/27)
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Left rear surround speaker (H4/54)
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Right rear surround speaker (H4/57)
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Line Out for subwoofer amplifier (N40/9)
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Remote for subwoofer amplifier
Function
