Land Rover, Range Rover L322 (SE, HSE, Vogue)
2002 - 2010
2002 - 2005 models
The earlier model Range Rover L322 cars had two types of head units in the dashboard. The basic Multi Information Display (MID) head unit, and the high line Multi Function Display (MFD) head unit.
The basic MID unit was available as a cassette tape player, a CD player or a Mini Disc player. The high line MFD head unit had a cassette player behind the motorised screen and a CD changer in the glove box, the tuner radio module is located in the rear of the vehicle in the rear left quarter panel.
Below is an image of the basic MID head unit
Below is an image of the high line MFD head unit
There are also three options for the audio system. Non amplified audio system, Power amplifier and DSP (Digital Signal Processor) amplifier.
Basic audio.
The non amplified audio system has two way speakers in the front doors and single speakers in the rear doors. Audio is supplied directly from the head unit in cars with the basic MID head unit system, or from the tuner radio module in the rear left quarter panel on cars that have the high line MFD head unit system.
Below is a diagram of the non amplified basic audio setup.
Power amplifier.
Some cars have a power amplifier, these amplifiers are switched on by a +12V turn on signal, this is the same signal as the antenna turn on. The amplifier receives a normal audio signal from the basic head unit or tuner radio module and then drives the speakers in the car. Cars with the power amplifier will have single speakers in the rear doors, three way component speakers (low, mid and tweeters) in the front doors and a centre speaker on the dashboard. The centre speaker is bridged between the front door mid range speakers.
Below is a diagram of the power amplifier audio setup.
Below is an image of the power amplifier. Note the styling of the heatsink fins and the single large connector with locking latch, this is how the power amplifier can be differentiated from the DSP amplifier.
DSP (Digital Signal Processor) amplifier.
Some cars have a DSP amplifier, these amplifiers are switched on by an I-Bus data signal and receives a data audio signal from the basic head unit or the tuner radio module. Cars with the DSP amplifier will have single speakers in the rear doors, three way component speakers (low, mid and tweeters) in the front doors, a centre speaker on the dashboard and a dual subwoofer in the boot (in the rear left quarter panel, forward from the amplifier and tuner radio modules). The centre speaker is bridged between the front door mid range speakers.
Below is a diagram of the DSP amplifier audio setup.
Below is an image of the DSP amplifier. Note the styling of the heatsink on the sides of the amplifier and the three connectors, one large round pin connector and two smaller connectors with locking latches, this is how the DSP amplifier can be differentiated from the power amplifier.
Setup varieties.
Because of the head unit and audio options, there are 6 setup possibilities for the 2002 - 2005 model cars.
Basic head unit with basic audio
Basic head unit with Power amplifier
Basic head unit with DSP amplifier
High line head unit with basic audio
High line head unit with Power amplifier
High line head unit with DSP amplifier
There are three common setups that are usually seen in the cars, they are the basic head unit with basic audio, basic head unit with power amplifier and the high line head unit with DSP amplifier options. The other options are fairly rare to see.
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