2010 GMC Terrain: A-Pillar Tweeters
December 24, 2010
The first time I saw tweeters mounted in a car's A pillars was at a "sound-off" competition back in the early '90s. As with auto racing, a lot of car audio innovations came out of the sound-off scene (tweeters mounted in the A pillars or "sail" panels of the doors, center-channel speakers, subwoofers in the front of the car) since competitors would try anything to give them an edge.
Over the years, automakers have adopted several applications that were first used in the aftermarket, and that can be directly traced to sound-off competitions. Our 2010 GMC Terrain has a tweeter in each A pillar, for example, as does our 2010 Chevrolet Traverse, although the system in the Terrain is from Pioneer and the one in the Traverse is from Bose.
Not that positioning the tweeters as far forward as possible does much to improve the Terrain system's sound quality or enhance imaging and staging, as evidence by an audio review of the system. But it's usually better than burying them in the doors.
Doug Newcomb, Senior Editor, Technology