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B100 High-Performance Folded Motion® XT Bookshelf Speaker

Our best bookshelf speaker, for those wanting maximum performance without moving to a tower speaker. The Gen2 Folded Motion® XT Tweeter and Nomex®-Reinforced Kevlar® woofer deliver exceptional clarity and precision, making B100 ideal for 2-channel or home theater setups. For those desiring a stand mount option, the B100 is threaded to securely attach to our matching STAND25 speaker stand (sold separately) for maximum stability.



Motion®: Reimagined

Our most ambitious acoustic and aesthetic development in MartinLogan's 40-year history. Motion® Series defines elegance and performance by leveraging exclusive technologies and decades of experience. The result is a loudspeaker collection that is not just an upgrade of its predecessor, but a whole new level of quality and excellence.



Legendary MartinLogan Sound

MartinLogan speakers are known for their exceptional articulation, detail and realism, regardless of the listening environment. By using advanced thin-film technologies and Controlled Dispersion, MartinLogan delivers a unique and unparalleled listening experience that is not commonly found in other speakers.



Gen2 Obsidian Folded Motion® Tweeter XT

The Gen2 Obsidian FMT XT Tweeter has been upgraded with a larger motor to provide higher output and lower distortion. The FMT XT offers the most effortless and detailed sound in the Motion range with a 40% increase in surface area over our signature FMT. Outside of our legendary Electrostatic speakers, these new tweeters provide our cleanest, most detailed and accurate high frequency presentation to date.



Folded Motion® Waveguide

After an extensive evaluation of nearly 50 design options, the Folded Motion® Waveguide profile was meticulously chosen to harmoniously align the tweeters output with the dispersion of the midrange drivers, enhancing the performance of our already incredible Gen2 Folded Motion® Tweeters. The Folded Motion® Waveguide helps blanket the listening area with evenly distributed detail and precision, ensuring an optimal experience for everyone. The waveguide also enhances the Controlled Dispersion output of the tweeter, offering generous coverage while minimizing unwanted room reflections.



Controlled Dispersion

Any time your speaker reflects sound off of a surface in your room, it changes the sound in some way. One of the most harmful changes that occurs is the result of the first reflection point, or the first point at which sound begins to bounce off the walls or other surfaces in the room. Controlled Dispersion minimizes these sound degrading early reflections by controlling the spread of sound from the tweeter into the room, enhancing your listening experience with greater clarity, and expanded placement options in any room.



Nomex®-Reinforced Kevlar® Midrange

The Nomex®-Reinforced Kevlar® Mid-bass in the Motion® XT B100 offers a perfect balance of lightweight, strength, anti-resonance and anti-ringing properties for unparalleled sound quality. When combined with the Gen2 Obsidian FMT XT, the clarity of vocals, dialogue and instrumental accuracy is unmatched at any volume. The seamless integration with Motion® XT CI products makes creating custom solutions effortless.



Modern Design Featuring 

Luxurious FinishesThe Motion® speakers are the epitome of high-performance audio, utilizing cutting-edge technology and the highest quality materials to deliver sound quality that is truly unmatched. Their sleek, sophisticated design is an artful complement to any luxurious interior. Available in three finishes of Piano Black, Walnut, and Satin White, the Motion® series is an exquisite addition to any discerning individual's home, rivaling the most elegant of furnishings. Upgrade your audio experience and enhance your space with the Motion® series.

Martin Logan Motion XT B100 Bookshelf Speakers - Pair


    Frequency Response : 45 Hz - 25 kHz 


    Folded Motion® Waveguide Enhanced Tweeter Dispersion (VxH): 

              45° x 90°


    Recommended Amplifier Power : 20 - 250 watts per channel 


    Sensitivity (2.83 volts / meter) : 93 dB


    Impedance : 4 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers  


    Crossover Frequency : 2,600 Hz (2-way) 


    High Frequency Driver :  1.25" × 2.4" (3.2 × 6.1 cm) Gen2 Obsidian Folded Motion XT® Tweeter with 12.4 in² (79.8 cm²) diaphragm


    Mid Frequency Driver :  6.5” (16.5 cm) Nomex Reinforced Kevlar® cone with cast aluminum basket. Non-resonant asymmetrical chamber format. Unibody cone construction


    Cabinet :  Rear Ported 


    Binding Post Inputs : Custom bi-amp/bi-wire capable 5-way binding posts


    Dimension : 14-1/2”H x 8"W x 12-1/2”D


    Weight : 20.5 Lbs. 


    Available finishes: Gloss Black, Walnut and Satin White




    Specifications are subject to change without notice 

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