Magna?s AcoustiVision Turns Rear-Windows Into Subwoofers

A new technology called AcoustiVision hopes to put some Boom Boom Pow into your rear window. All car subwoofers rattle the entire car -- rear window included -- but Magna says their technology can use the rear window to make sound. AcoustiVision uses two exciters at the base of the window with power fed from amps in the trunk, which are said to boost a stereo signal from 12 to 200 volts. After the system is connected, the two exciters use the glass as a membrane to vibrate the window, moving air to create sound.

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