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Direct/Reflecting™ speaker technology

The solution

Bose Direct/Reflecting speakers immerse listeners with a combination of reflected and direct sound

While testing the original 2201 speakers, Bose engineers first began to understand why the ratio of reflected to direct sound is so important to live music. Their experiments revealed it was the spatial characteristics of the concert hall that gave music its live quality. To get the same effect from a loudspeaker, they'd have to emulate those characteristics.

Thorough experimentation ensued, and in 1967 a pair of pentagon-shaped enclosures, each with nine drivers, emerged from the lab. But it was their unusual configuration—eight drivers pointing to the rear and only one to the front—that was the breakthrough.

The team had learned that a desired ratio of reflected to direct sound was about eight or nine to one. Because the majority of its drivers faced the rear to reflect sound off the walls, this unconventional speaker system delivered sound similar to that of a live performance. Years of research was finally realized with the launch of the 901™ Direct/Reflecting™ speaker.

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