Land Rover Discovery: Audio System - Overview

The audio system is available in five versions. Three of the systems use an Audio Head Unit (AHU) and two use an Integrated Audio Module (IAM).

All systems are controlled using an 8" Touch Screen (TS) and steering wheel mounted controls.

AUDIO HEAD UNIT (AHU) - INCONTROL TOUCH AUDIO SYSTEMS

Three of the audio systems use an Audio head Unit (AHU):

• InControl Touch 6 speaker audio system with integrated 4 channel audio amplifier
• InControl Touch 10 speaker 190W audio system with external 8 channel Audio Amplifier Module (AAM)
• InControl Touch 11 speaker 250W audio system with external 8 channel AAM and sub-woofer.

Two versions of the AHU are available:

Level B AHU features:

• Integral 4 channel amplifier
• Amplitude Modulation (AM)/Frequency Modulation (FM)
• Digital Radio (SDARS/HD Radio for NAS markets)
• External media player inputs
• Bluetooth connectivity

Level C AHU features:

• External 8 channel amplifier
• AM/FM
• Digital Radio (SDARS/HD Radio for NAS markets)
• Audyssey MultEQ XT audio tuning system
• External media player inputs
• 'InControl' telematics system
• Wifi hotspot
• Voice recognition
• SMS text display
• Navigation system with Secure Digital (SD) memory card updates
• Bluetooth connectivity

A portable audio interface panel allows for the connection of a range of portable audio devices to the car's audio system. The panel is controlled through the Audio Head Unit (AHU), with play back through the vehicle's speaker system. This system allows the user to import data from their personal portable media player to interface with the vehicle, including iPod and other MP3 players, or Universal Serial Bus (USB) mass storage devices such as memory sticks. MP3 players can also be controlled through the Touch Screen (TS) if they are configured as mass storage devices. The portable audio interface panel includes a 3.5mm auxiliary jack-plug socket, plus a USB2 connector which allows connectivity for a wide variety of USB devices, including iPods via the USB. The USB port also includes a charging function, although it does not support a USB hub. The maximum charging current supplied is 0.5A or 2.1A dependant on level of AHU fitted. The user can connect either an iPod or a USB device to the USB connector, and select the appropriate function from the TS. On vehicles with a navigation system, the portable audio interface also includes an SD memory card port for navigation system and voice command software.

INTEGRATED AUDIO MODULE (IAM) - INCONTROL TOUCH PLUS AUDIO SYSTEMS

InControl Touch Plus with external 250W AAM, - 11 speakers including dual voice coil sub-woofer and single slot CD (compact disc) player.

InControl Touch Plus with Meridian Surround Sound System with external 825W AAM, Meridian Trifield, Dolby Pro Logic IIx, and DTS Neo:6 decoder - 17 Speakers including dual voice coil sub-woofer and single slot CD player.

The InControl Touch Plus is a fibre optic Media Oriented System Transport (MOST) based system.

The system includes the following features:

• External media player inputs
• MP3-compatible, single slot CD
• AM / FM radio
• HD Radio
• Digital Radio Control Module (Europe and Asia only) or Satellite Radio Control Module/HD Radio (NAS only).
• EON, RDS, PTY, TA
• Audyssey MultEQ XT audio tuning system
• Bluetooth and audio streaming
• 40GB Hard Disc Drive (HDD) for navigation and virtual CD player.

All sound systems are specified with:

• Hard Drive Navigation system (except Japan and Asian markets) with virtual CD player and single slot DVD (digital versatile disc).
• Interactive 'Say What You See' (SWYS) Voice Control system.

The Integrated Audio Module (IAM) combines radio and Compact Disc (CD) / Digital Versatile Disc (DVD) functions, satellite radio or Digital Radio, MP3 disc compatibility, RDS, PTY and TA functions. The IAM is a combined radio tuner, CD / DVD player and incorporates a 40GB hard drive for use by the audio for storing music and also stores the operating system and files for the navigation system (not applicable to Asian market vehicles).

Digital Radio (DAB, DAB+ and DMB) is available Europe, Canada, Australia and Asian markets and gives access to digital radio channels for better sound quality and enhanced functionality depending on local service availability. A Digital Radio control Module (DRCM) processes the received digital signals. The system receives reception signals from the following sources to ensure optimum signal strength:

• Digital Radio band L antenna located in the roof pod antenna module
• Digital Radio band III antenna located in the rear spoiler.

For NAS vehicles, the digital format adopted is Satellite Digital Audio Radio Service (SDARS) which specifically links to the SiriusXM network. The subscription system operates in the S-band frequency range, and as a result of the use of satellite transmission, has the ability to provide CD quality audio broadcasts over very large areas (typically continents). The Satellite Radio Control Module (SRCM) processes digital signals from the satellite radio antenna located in the roof pod.

Primary user control of the audio system is via the Touch Screen (TS) which is located in the center of the instrument panel. Control signals from the TS are relayed on the medium speed Controller Area Network (CAN) Comfort systems bus to the IAM. The IAM relays the control signals to the rest of the audio system on a Media Oriented System Transport (MOST) ring. The TS is the timing master for the MOST ring and also hosts a gateway function between the medium speed CAN (controller area network) bus and the MOST ring.

Component location - Incontrol touch/ Incontrol plusAudio System / Description

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