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The Martin Logan Motion 4 is a compact passive bookshelf speaker built around a Folded Motion tweeter, a folded-ribbon design that gives it crisp, detailed highs. It pairs that tweeter with a 4-inch mid/bass driver in a bass-reflex cabinet, and its 90 dB sensitivity means modest amplifiers can drive it. It suits small rooms, desktops and surround duty where a slim cabinet matters. Against conventional dome-tweeter bookshelf speakers in its class, it trades some low-end weight for airier treble and a smaller footprint.
In stock
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Lowest price we've seen: $219.99 on Nov 13 at Best Buy. Tracked across 1 store since Nov 13.
Owners of the Motion series praise the Folded Motion tweeter for clarity and detail, and the Motion 4 is liked as a compact surround or desktop speaker. Critics note the limited bass and the need for a solid amplifier at 4 ohms.
The Martin Logan Motion 4 is a passive bookshelf speaker in black. It has a 2-way design and a bass reflex enclosure.
It has no Bluetooth, app control, AirPlay, Chromecast or Spotify Connect, and it is not a smart speaker.
