Design

Design

control module




The audio module (AUD) is an amplifier intended to transport the audio signal transmitted on the MOST network out to the directly connected speakers.

The following variants of the audio module (AUD) are available:
- High Performance
8 speakers, 4x50W output
Headphone panel (option)
- High Performance Multimedia
8 speakers, 4x50W output
Headphone panel (option)
- Premium Sound Multimedia
11 speakers, 5x130W output
Headphone panel (option)

Functions in the audio module (AUD)
The audio module (AUD) can run a number of different functions, but these functions can also be activated by other nodes. An example of these functions is lowering and increasing the volume. The signal comes from the infotainment control module (ICM), but it is the audio module (AUD) that actually changes the volume. The functions are described below.

Note! Different versions of Audio module (AUD) have a different number of functions.

1. Adjustable volume.
Raises or lowers volume.
2. Adjustable bass.
Raises or lowers bass sound.
3. Adjustable treble.
Raises or lowers treble sound.
4. limiter.
The Limiter function used in the control module does not permit increase of the output if this results in reduced sound quality. In vehicles with double batteries the function limits the output when stopped.
5. Mixing.
Mixing allows numerous different sound types to be mixed. In this case, the different sound types are foreground noise background noise. An example of this is where a CD is playing (background noise) and the reverse warning is activated (foreground noise). The reverse warning will be heard in the loudspeakers while the volume of the music drops at the same time
6. Bass compensation.
The bass from the control module is compensated/modified depending on the volume and the speed of the car. If the vehicle's speed and volume change, the bass compensation also changes.
7. Treble compensation.
The treble in the control module is compensated/modified depending on how the volume is changed. If the volume changes, the treble compensation also changes.
8. Equalizer setting, sound compensation.
Different audio settings can be made from the audio module (AUD). This compensates for factors such as the location of the speakers and the layout of the vehicle interior.
9. Dolby ProLogic II.
Surround decoder for playback of sound.
10. Dolby digital.
Surround decoder for playback of multi-channel sound.
11. Adjustable surround level.
Setting of volume for the different surround channels.
12. Sound Stage.
Optimizing of sound for driver, front and rear seat.
13. Echofilter.
Prevents echoes in the handsfree speaker.
14. Center channel volume.
Raises or lowers the center channel volume.
There are two types of sound, foreground sound and background sound. The sounds which are foreground and background are listed below.

Foreground audio:
- navigation
- traffic messages
- parking assistance.

Background audio:
- analog radio, AM/FM
- CD player
- DVD player
- USB
- AUX-input (3.5 mm)
- media player, bluetooth.
The functions in the different versions of the audio module (AUD) are:

High Performance and High Performance Multimedia
1. adjustable volume
2. adjustable bass level
3. adjustable treble level
4. limiter.
5. mixing
6. bass compensation
7. treble compensation
8. equalizer

Premium Sound Multimedia
1. adjustable volume
2. adjustable bass level
3. adjustable treble level
4. limiter.
5. mixing
6. bass compensation
7. treble compensation
8. equalizer.
9. Dolby ProLogic II
10. Dolby digital
11. Adjustable surround level
12. Sound Stage
13. Echofilter
14. Center channel volume

Loudspeakers




High Performance and High Performance Multimedia
High Performance and High Performance Multimedia are equipped with 8 speakers, bass/mid-range and separate treble speakers. The speakers are installed in the front and rear doors, respectively.
Impedance is 2 ohms for the bass/mid-range speakers and 5 ohms for the tweeters.
Premium Sound Multimedia
Premium Sound Multimedia is equipped with 11 speakers. A 3-way speaker system is installed in each front door consisting of separate bass, mid-range and treble speakers. A 2-way speaker system is installed in each rear door consisting of bass/mid-range speakers and separate treble speakers. To improve the sound and to amplify sound reproduction there is also a 2-way mid-range/treble speaker installed in the instrument panel.
Impedance is 4 ohms for the bass speakers, 8 ohms for mid-range and 6 ohms for the tweeters. The center speaker has an impedance of 4 ohms.

Headphone panel




Audio module (AUD) has two outputs for connecting headphones/earphones. The headphone panel is located by the rear part of the tunnel console. Each separate headphone output has control of volume, next track, previous track, and selection of source.