The only caveat is that the Motion AFX will look more like a rhombus when paired with non-MartinLogan Motion series speakers. The Motion AFX have an angled, parallelogram look to them and a high-gloss, piano-black finish that mates them perfectly to Martin Logan’s Motion series loudspeakers, although there’s nothing to prevent you from pairing them with any flat-top speaker. You can use spades, banana plugs, or bare wire. MartinLogan’s oval-shaped five-way binding posts are superb and easy to tighten. Therefore you always set the Motion AFX as a “small” speaker in your A/V receiver, though modern room correction systems typically take care of this for you automatically. Frequencies above 80Hz are directional, while frequencies below that are not.
Indeed, the Motion AFX’s frequency response is only 90Hz to 20kHz. The reason for this is that an Atmos-enabled speaker doesn’t have to cover the vast frequency range of a typical speaker. The Motion AFX is far smaller than typical bookshelf speakers. The front is completely blocked off and no sound can escape directly toward the listener. Even though there’s a perforated grille at the front, the speaker has no front-facing driver.
#Martinlogan motion fx drivers#
If you shine a flashlight through the Motion AFX’s grille, you’ll see the drivers on the top of the speaker against an angled ramp.
The Motion AFX’s top has a perforated grille that hides the angled drivers. When source material containing height information is played, the Motion AFX projects that audio signal towards the 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. For that effect to happen, an Atmos-enabled speaker like the MartinLogan Motion AFX must point at your ceiling.
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