Remarkable Dolby Atmos add-on speakers

Immersive audio technologies such as Dolby Atmos and DTS:X create an incredible three-dimensional sound field that simply blows away traditional multi-channel home theater. Once you hear it, you just can’t go back.

If you’ve longed for immersive audio in your home theater, but balked at the thought of installing speakers in your ceiling, MartinLogan has a fantastic solution. The company’s Motion AFX, $599 per pair, are Dolby Atmos-enabled speakers deliver all the benefits of object-oriented soundtracks such as Dolby Atmos and DTS:X without the hassle of opening your ceiling.

How do the Motion AFX perform their magic?

Dolby Laboratories, the company behind Atmos, knew that most consumers wouldn’t be able to install in-ceiling speakers. So, with some creative thinking, the laws of physics, and a bit of psychoacoustics, Dolby came up with a slick solution aptly called a Dolby Atmos-enabled speaker. To be labeled as an Atmos-enabled speaker, a speaker must conform to Dolby’s standards.

All about object-oriented audio technology such as Dolby Atmos.

An Atmos-enabled speaker sits on top of an existing flat-top speaker or on a speaker stand above ear height, but is angled to bounce sound off the ceiling down to your listening position so that you hear the sound coming from above you. It’s comparable to bouncing a ball off the ceiling so that it reflects and comes at you from above.

For that effect to happen, an Atmos-enabled speaker like the MartinLogan Motion AFX must point at your ceiling. The Motion AFX’s drivers, comprised of a 0.75-inch aluminum dome tweeter and a 5.25-inch polypropylene cone bass/midbass driver with a stamped steel basket, are angled upward within the speaker cabinet. When source material containing height information is played, the Motion AFX projects that audio signal towards the ceiling.

Theo Nicolakis

The Motion AFX’s top has a perforated grille that hides the angled drivers.

If you shine a flashlight through the Motion AFX’s…

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