Martin Logan Motion XT B100

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The Motion XT B100 is a premium bookshelf speaker from MartinLogan’s acclaimed Motion XT series, engineered to deliver reference-level performance in a compact form. It blends advanced acoustic technologies with elegant design, making it a top choice for audiophiles and style-conscious listeners alike. At the heart of the B100 is MartinLogan’s Gen2 Obsidian Folded Motion® XT tweeter housed in a specially engineered waveguide. This tweeter delivers ultra-precise, lightning-fast high frequencies with minimal distortion and a wide, consistent soundstage. Paired with a 6.5″ Kevlar/Nomex-reinforced woofer, the B100 produces clean midrange and tight bass, filling the room with rich, natural sound.

Martin Logan Motion XT B100 Bookshelf Speaker

  • Part of the high-performance XT line, offering top-tier audio quality in a bookshelf form
  • High-output Gen2 Obsidian Folded Motion® XT tweeter with waveguide – delivers crisp, detailed highs with wide dispersion
  • Nomex®-reinforced Kevlar® woofer – lightweight yet rigid, minimizing distortion for clean midrange and bass
  • Rear-ported cabinet designed for punchy, extended low-end in a compact footprint
  • Controlled dispersion design ensures consistent sound regardless of listening position
  • Threaded base compatible with optional STAND 25 stand for flexible placement
  • Removable magnetic grille with elegant finish—available in Gloss Black, Walnut, and Satin White
Dimensions (H x W x D, with feet)

14-1/2” x 8” x 12-1/2”

36.8cm x 20.3cm x 31.8cm

Frequency Response

45 Hz - 25 kHz
± 3 dB

Tweeter Dispersion (horizontal x vertical)

90° x 45°

Recommended Amplifier Power

20 - 250 watts

Sensitivity

93 dB

Impedance

4 ohms

High Frequency Driver

1.25” x 2.4” (3.2 x 6.1cm) Gen2 Obsidian Folded Motion XT Tweeter with 12.4 in2 (79.8 cm2) diaphragm

Crossover Frequency

2,600 Hz (2-way)

Mid-Frequency Drivers

6.5” (16.5cm) 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

Weight

20.5lbs / 9.3kg

Finish

Gloss Black, Walnut, and Satin White

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.

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.

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 with the dispersion of the midrange drivers, resulting in enhanced output. The waveguide guarantees consistent sound quality regardless of the listener's position and minimizes unwanted room reflections. Proper waveguide design is crucial as it helps control the sound's dispersion pattern, ensuring that the sound is evenly distributed across the listening area and resulting in optimal sound quality.

Folded Motion® Waveguide

After an extensive evaluation of nearly 50 design options, the Folded Motion® Waveguide profile was meticulously chosen to harmoniously align with the dispersion of the midrange drivers, resulting in enhanced output. The waveguide guarantees consistent sound quality regardless of the listener's position and minimizes unwanted room reflections. Proper waveguide design is crucial as it helps control the sound's dispersion pattern, ensuring that the sound is evenly distributed across the listening area and resulting in optimal sound quality.

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.

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.

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