Active Sound Design was designed to comply with European noise emission regulations. They simply can't make the cars as loud on the outside as they used to be and so they're trying to make up for that with this system. Regardless of the manufacturer all designers are going to have to get creative with ways to pipe sound into the interior while keeping exterior noise low.
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2011 335i LCI Sedan, Sapphire Black, Oyster Dakota Leather, Premium, Cold Weather, Sport w. Paddles, iDrive, iPod, Premium Sound, Comfort Access.
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