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The amplifier receives a normal audio signal from the basic head unit or tuner radio module and then drives the speakers in the car.

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. 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.īelow is a diagram of the non amplified basic audio setup. The non amplified audio system has two way speakers in the front doors and single speakers in the rear doors. Non amplified audio system, Power amplifier and DSP (Digital Signal Processor) amplifier. There are also three options for the audio system. 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.īelow is an image of the basic MID head unitīelow is an image of the high line MFD head unit The basic MID unit was available as a cassette tape player, a CD player or a Mini Disc player. The basic Multi Information Display (MID) head unit, and the high line Multi Function Display (MFD) head unit. The earlier model Range Rover 元22 cars had two types of head units in the dashboard. Land Rover, Range Rover 元22 (SE, HSE, Vogue)