Normal Operation
WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
All vehicles are equipped with 4 radio speakers mounted in the doors. The optional subwoofer is mounted in the right rear quarter panel. When the audio unit is powered up, a wake-up signal is sent to the subwoofer amplifier. Audio output signals are then sent continuously to the subwoofer amplifier. These signals are then amplified and sent to the speakers as a fluctuating AC voltage thus producing sound from the speakers. A fluctuating AC voltage audio signal is also sent to the remaining speakers, directly from the audio unit, to produce sound. The DVD player sends fluctuating AC voltage audio output signals to the audio unit. These signals are then amplified by the audio unit and sent to the speakers.