Motion XT B100 The Martin Logan Motion XT B100 is the best bookshelf speaker for those who want maximum performance without switching to a floorstanding speaker. The Gen2 Folded Motion XT tweeter and Nomex Kevlar-amplified woofer deliver exceptional clarity and precision, making the B100 ideal for dual-channel setups or home theaters. The Gen2 Obsidian FMT XT tweeter in the Martin Logan Motion XT B100 has been upgraded with a larger driver to deliver higher power output and less distortion. The luxurious finish of the Martin Logan Motion XT B100 is the epitome of high-quality sound, using cutting-edge technology and the highest quality materials to deliver truly unparalleled sound quality. Their sleek, sophisticated design is an artful addition to any luxury interior design. The Motion series defines elegance and performance using exclusive technology and years of experience. 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 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. F.A.S.T. Outrigger Feet The tower models in the Motion® range are designed with tool-less height adjustability in mind, using the included rubber feet or spikes, which enables the user to effortlessly level the speaker for optimal stability on any floor. Additionally, the built-in anti-vibration properties reduce the transfer of energy from the speaker to the floor, resulting in lower distortion and coloration, providing a more accurate and detailed sound. 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 Finishes 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. SPECIFICATIONS 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