"Apples invention generally relates to a MacBook Pro including an audio transducer in electrical communication with the processor. The audio transducer includes a magnetic coil, and a magnet in communication with the magnetic coil. "
Leaping to Apple's patent FIG. 8 below, we see that the audio transducers (26) may be combined with multiple speakers 20, 72 and 74 to produce either a 3.1 or 4.1 surround sound configuration. For example, for a 3.1 surround sound configuration two top enclosure speakers 72, in combination with the bottom enclosure speaker (20) and the audio transducer (26) may each cover an audio range. The top enclosure speakers may be high range, the bottom enclosure speaker may be mid-range and the audio transducer may be the low range or bass sound. Similarly, to achieve a 4.1 surround sound configuration an additionally bottom enclosure speaker may be added.
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