Lance Ulanoff, writing for Mashable, from his long form interviews with Apple VP of Sales and Marketing Phil Schiller and VP of Mac and iPad Engineering John Ternus:
The little strip of black along the two back edges of the MacBook’s twin speakers could easily have been mistaken for a bit of shielding or a vibration dampener. Except, that’s not what it is.
Some like to call it the “Speaktenna.” The black strip along the back edge of the MacBook speakers is a never-before-tried combination of speakers and antennas for Wi-Fi and Bluetooth. It’s a fairly ingenious bit of space-saving technology that teardown artists ignored.
But that’s not really the story. It’s about what “speaktenna” represents: the Apple way of conceiving, designing and building its products.
Chock full of examples, quotes, images and anecdotes, this is another great read, worth making time for.