MartinLogan Motion XT B100

High-Performance Folded Motion Bookshelf Speaker

Item #ML:XTB100-EA
MartinLogan

MartinLogan Motion XT B100

High-Performance Folded Motion Bookshelf Speaker

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Overview
Experience superior audio performance with MartinLogan’s B100 bookshelf speaker — the ultimate choice for high-output sound without the need for a tower speaker. The Gen2 Folded Motion XT Tweeter and Nomex-Reinforced Kevlar woofer deliver exceptional clarity and precision, making it ideal for 2-channel or home theater setups, particularly when paired with a subwoofer. This stand mount option comes with the added convenience of being able to securely attach to our matching STAND25 speaker stand for added stability. Enjoy exceptional sound from a compact and versatile package. MartinLogan’s best bookshelf speaker for those wanting maximum performance without moving to a tower speaker.

High Notes

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Larger Gen 2 Folded Motion Tweeter with Improved Dispersion

The completely redone Gen 2 Folded Motion XT tweeter is even faster and lower in distortion than ever before. With over twice the surface area of the Motion tweeter, the XT version is even more transparent. The new waveguide improves dispersion to fill up your room with that famous MartinLogan clarity.

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Fantastic New Kevlar & Nomex Driver Design

The combination Kevlar and Nomex driver to our ears sounds fantastic. When you couple the subtle midrange nuances it allows you to hear with the extremely transparent folded motion XT tweeter, you can tell MartinLogan got close to the sound of their true electrostatics with these new models

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A Truly Great Bookshelf Speakers

We loved the B100 with its new drivers and high sensitivity, music came to life. The soundstage these painted was also very 3 dimensional.

Motion XT B100 Bookshelf Speakers

The bookshelf model in the XT line is called the XT B100. You get the 6.5” Nomex Reinforced Kevlar driver paired with the much larger XT motion tweeter. Sensitivity goes up to 93db and the low end is much deeper than the B10 with a spec of 45 Hz. We compared the B10 and XT B100 side by side and we felt the XT model completely blew away the B10. The bass went far deeper, but that added bass along with the better driver made voices and instruments in the midrange just sound far more accurate. If you are looking for a bookshelf stand-alone speaker, spend the extra 20% and get the XT B100, you will not regret it. We also tested it in a really large space and it had no problem putting out a big sound that was very fulfilling. This model is one heck of a good value.

Details & Specs

The Motion Series is inspired by the performance of our ultra-high-end electrostatic loudspeakers and is perfect for music or home cinema lovers. Discover confident floor-standing speakers and gutsy compact bookshelf models with timbre-matched centers, all featuring MartinLogan's latest Gen2 Folded Motion tweeter and backed by high-performance Woven Fiberglass Midrange Drivers and hand-built crossovers. They reveal a richly detailed audio experience at an unrivalled price.

Gen2 Folded Motion Tweeter:

The latest thin-film Gen2 FMT offers effortless performance unmatched by conventional technologies. Utilizing a lightweight material with more surface area, the FMT brings the audience's favorite content to life with the highest levels of detail and accuracy.

Controlled Dispersion:

Room acoustics are vital, as everything in the listening room impacts speaker performance. MartinLogan minimizes these harmful effects by focusing the sound into the listening area, increasing flexibility, clarity, and placement options, regardless of the room's design.

Woven Fiberglass Midrange:

The lightweight and strong Woven Fiberglass midrange in the Motion Series is perfectly suited for keeping pace with Motion's Gen2 FMT, providing crystal clear dialogue, vocals, and lifelike instrumentals. Seamlessly blends with Motion CI products to make creating custom solutions easy.

F.A.S.T. Foot (Tower Models):

Tower models feature tool-less height adjustability utilizing rubber feet or spikes, allowing the user to level the speaker for maximum stability on any floor perfectly. Built-in anti-vibration properties lower distortion by reducing 'judders' between the speaker and the floor, leaving nothing but pure sound.

Enhanced Cabinet Bracing:

The latest Motion Series cabinetry is our quietest design yet, maximizing the performance of the proprietary audio technologies.

Single Cannon Bass Ports (Tower Models):

The bottom-mounted "Single Cannon" bass port provides deeper, cleaner, and more powerful bass across a wider range of placement options.

Floor Bounce Compensation (Tower Models):

Bringing studio reference sound to reality with precision woofer placement and crossover tuning, MartinLogan engineers have designed their tower models to produce a more natural and full sound by taking advantage of a constant found in all listening rooms; the floor!

McCracken-Vojtko Crossovers:

The culmination of combining extensive anechoic measurements, proprietary modeling software, in-room measurements, and multiple blind listening tests with the low distortion philosophy of MartinLogan's signature Vojtko Crossover. Through this process, each speaker was refined to achieve the best real-world performance.

F200 F100 C100 B100
Application Floorstanding Floorstanding Center Channel Bookshelf
Frequency Response 27 Hz - 25k Hz 31 Hz - 25 kHz 42 Hz - 25 kHz 45 Hz - 25 kHz
Folded Motion® Waveguide Enhanced Tweeter Dispersion (VxH) 45° x 90° 45° x 90° 45° x 90° 45° x 90°
Sensitivity (2.83 volts/meter) 92 dB 92 dB 93 dB 93 dB
Impedance 4 ohms 4 ohms 5 ohms 4 ohms
Compatible with 4, 6, or 8 Ohm rated amplifiers
Crossover Frequency 300Hz, 2600Hz (3-way) 280 Hz, 2600 Hz (3-way) 1,300 Hz, 2,500 Hz (2.5-way) 2,600 Hz (2-way)
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 1.25” x 2.4” (3.2 x 6.1cm) Gen2 Obsidian Folded Motion XT® Tweeter with 12.4 in² (79.8 cm²) diaphragm 1.25” x 2.4” (3.2 x 6.1cm) Gen2 Obsidian Folded Motion XT® Tweeter with 12.4 in² (79.8 cm²) diaphragm 1.25” x 2.4” (3.2 x 6.1cm) Gen2 Obsidian Folded Motion XT® Tweeter with 12.4 in² (79.8 cm²) diaphragm
Mid Frequency Driver 6.5” (16.5cm) Nomex Reinforced Kevlar® cone with cast aluminum basket. Non-resonant sealed chamber format. Unibody cone construction. 6.5” (16.5cm) Nomex Reinforced Kevlar® cone with cast aluminum basket. Non-resonant sealed chamber format. Unibody cone construction. 2x 6.5” (16.5cm) Nomex Reinforced Kevlar® cones with cast aluminum baskets. Non-resonant asymmetrical chamber format. Unibody cone construction. Anti-lobing 2.5-way crossover design. 6.5” (16.5cm) Nomex Reinforced Kevlar® cone with cast aluminum basket. Non-resonant asymmetrical chamber format. Unibody cone construction.
Low Frequency Drivers 3x 8” (20.3cm)aluminum cones with cast aluminum baskets. Non-resonant asymmetrical chamber format. Unibody cone construction 3x 6.5” (16.5cm)aluminum cones with cast aluminum baskets. Non-resonant asymmetrical chamber format. Unibody cone construction.
Cabinet Bottom Ported Bottom Ported Rear Ported Rear Ported
Recommended Amp Power 20 - 600 watts 20 - 450 watts 20 - 300 watts 20 - 250 watts
Binding Post Inputs Custom bi-amp/bi-wire capable 5-way binding posts Custom bi-amp/bi-wire capable 5-way binding posts Custom bi-amp/bi-wire capable 5-way binding posts Custom bi-amp/bi-wire capable 5-way binding posts
Weight 86lbs / 39kg 76lbs / 34.5kg 34lbs / 15.4kg 20.5lbs / 9.3kg
Dimensions (HxWxD) Floorstanding model dimensions include the feet. Depth for all models include the binding posts 50-3/4" x 13-3/4" x 16-1/2" 14.6cm x 34.9cm x 41.9cm 47-3/4” x 12-1/2” x 15” 121.3cm x 31.75cm x 38.1cm 8” x 24” x 14-1/2” 20.3cm x 61cm x 36.8cm 14-1/2” x 8” x 12-1/2” 36.8cm x 20.3cm x 31.8cm
Finish Gloss Black, Walnut, and Satin White Gloss Black, Walnut, and Satin White Gloss Black, Walnut, and Satin White Gloss Black, Walnut, and Satin White
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