Feature introduction: 2015 model year
Availability: Standard on 2015-2017 Grand Cherokee Summit and SRT models (not available on other models)
The Active Noise Cancellation system is designed to address the change in exhaust noise whenever the vehicle is operating in Fuel Economy Mode (ECO) or 4 cylinder mode. The system relies on four microphones embedded in the headliner to detect the exhaust drone and prompt an onboard frequency generator to create counteracting sound waves through the audio system's speakers and sub-woofer. This helps keep the vehicle quiet at highway speeds.
The Active Noise Cancellation (ANC) module is a stand-alone module on SRT vehicles equipped with the Alpine audio system. The module is located behind the right rear quarter trim panel. On SRT and Summit models equipped with the Harman Kardon audio system, the module is integral into the audio amplifier located behind the left quarter trim panel. The ANC system also includes 4 microphones located in the headliner. These microphones are serviced separately from the headliner.
The Active Noise Control (ANC) module performs the creation of signals appropriate to cancel engine order related vehicle noises from the engine. It creates these signals in proportion to the Engine RPM plus any other needed input.
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