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Principles of Operation: Subwoofer

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

The MKX premium sound subwoofer contains an internal amplifier that is powered by a dedicated circuit. The ACM  sends audio signals to the amplifier and controls the subwoofer through an enable/clip circuit. The enable/clip detection circuit carries out 2 functions: to turn the amplifier on, and to indicate to the ACM  when the subwoofer output distortion signal reaches a damaging level. The ACM  then clips the audio output signal to prevent damage to the subwoofer.

The 2-speaker subwoofer in the Sony® and THX® audio systems receives audio signals directly from the audio DSP  module.

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