Patent ID: 7483539

Claim:
An automobile audio system in an automobile having a body with a tailgate moveable between a closed and open position, an engine and a battery comprising, a plurality of loudspeakers in fixed relation to and on respective portions of the automobile body, said loudspeakers comprising an audio system attached to the automobile constructed and arranged to have a first signal processing configuration in a first mode when the tailgate is closed and a second signal processing configuration in a second mode when the tailgate is open, wherein in the first signal processing configuration the audio system is constructed and arranged to process audio signals radiated by a first set of said loudspeakers to have a first system electrical topology and a first frequency response that is different from a second system electrical topology and a second frequency response of audio signals processed in the second signal processing configuration and radiated by a second set of said loudspeakers different from said first set so that an overall frequency response of the audio system perceived outside the automobile with the tailgate open is smoother when the audio system is in the second mode than when the audio system is in the first mode.