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Contents Bang Olufsen Audio System 4 Overview of the components . 5 Function diagram 6 Treble loudspeakers in dash panel . 8 Integrated loudspeaker systems . 9 Digital sound package control unit J525 10 Digital sound package control unit 2 J787 . 16 Digital radio tuner DAB 18 DAB technology 18 Digital radio R147 21 TV hybrid tuner analog and DVB T 24 DVB T technology . 24 TV hybrid tuner . 26 Aerials 33 Diagnostics 33 This self study programme teaches the design and function of new vehicle models, new automotive components or new technologies. Reference Note The self study programme is not a workshop manual All values given are intended as a guideline only, and refer to the software version valid at the time of publication of the SSP. Please refer to the relevant Service Literature for current inspection, adjustment and repair instructions. Bang Olufsen Audio System Bang Olufsen is a Danish manufacturer of high end entertainment electronics. Bang Olufsen attaches particular importance toper formance, design, human expectations and perfect workmanship. The goal for the development of the Bang Olufsen Advanced Sound System was to build the best sound system ever used in a motor vehicle. This a pplies both to the sound and to the ease of use and the design. Particular attention was paid to the acoustic quality of the sound system. A motor vehicle places special demands on a sound system. The listeners are not seated at the auditory centre of the loudspeakers. They are seated at different distances to the loudspeakers. The loudspeaker position is, to a large extent, predefined by the requirements relating to the occupant cell. The materials used to build the vehicle body and interior also affect the quality of the sound system. Centre 70 mm centre treble loudspeaker Acoustic lens 2 x 19 mm treble loudspeaker 4 Overview of the components The Bang Olufsen Advanced Sound System compris