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      <p>The optional BOSE® Surround Sound-System was specially developed for the 911 and is therefore perfectly tuned to the car’s specific interior acoustics. A total of 13 loudspeakers (12 in the Cabriolet models), including an active subwoofer and central speaker, and a seven-channel digital amplifier with a rated output of 385 watts, combine to produce a truly memorable sound experience.</p>
      <p>During audio playback from audio or video DVDs, the system is now able to make full use of the impressive sound spectrum of 5.1 digital recordings. With music in the 5.1 format, the sound has already been recorded in a multi-channel format and is faithfully reproduced exactly as the original.</p>
      <p>Five dedicated audio channels (front left, front right, centre, surround left, surround right) deliver a sound that is as authentic as it is natural. The digital 5.1 surround sound is balanced, lifelike and crystal clear. A 360-degree sound experience that is as close to a live performance as you could imagine.</p>
      <p>Of course, you can still play traditional music sources such as CDs, either in stereo or in one of the surround modes generated by the patented BOSE® Centerpoint® system. The algorithm of Centerpoint® II extracts an even more precise and realistic sound from the stereo signal.</p>
      <p>The SurroundStage® signal processing circuitry developed by BOSE® assigns each individual audio channel, whether sourced from a DVD or generated by Centerpoint®, to a selected combination of loudspeakers and is therefore able to deliver an optimally balanced surround sound experience to all seat positions.</p>
      <p>To complement these features, the BOSE® Surround Sound-System offers a comprehensive selection of equaliser presets for customised sound. The dynamic loudness function increases bass levels as you decrease the volume, thereby compensating for the decreasing sensitivity of the human ear at these frequencies. Moreover, the AudioPilot® Noise Compensation Technology uses a microphone to continuously measure the ambient noise inside the vehicle and adapts music playback automatically so that a consistent sound is maintained in all driving conditions.</p>
      <p>In short, welcome to your very own concert hall – one of the fastest around.</p>
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