MartinLogan Motion 50XTi Center Channel 2-Way Bass Reflex White

Motion 50XTi Center Speaker

For significant impact in a multi-channel audio system, the new Motion 50XTi delivers an expansive soundstage with precise detail, thanks to a Folded Motion® XT tweeter, dual vented 6.5-inch aluminum cone woofers with a rear-firing bass port, and a proprietary Vojtko crossover network. XT stands for extreme: lifelike detail from the lightning-fast Folded Motion XT tweeter, open and authentic midrange performance, paired with deep, musical bass response. These classic performance technologies have been improved with the slightest modification, including a stabilizing dust cap design and stiffened motor suspension. The speaker enclosure sports increased internal bracing, a reinforced baffle, and a fabric grille. Available in three elegant finishes: gloss black, matte white, and red walnut.

No-compromise engineering

What makes Motion Series sound so amazing? MartinLogan's dedicated in-house design and engineering team began by utilizing and refining the most advanced, compact technologies and combining them with innovative design techniques and proven cabinet construction. The result is emotionally engaging sound that rivals (and more often than not defeats) traditional loudspeakers of similar size and price. Our “no-compromise” philosophy gives Motion Series a unique sound you won't find anywhere else.

Sound inspired by electrostatic loudspeakers

The success of the Motion Series is directly attributed to its close relationship to MartinLogan's legendary ultra-high-end electrostatic loudspeakers. The desire to transmute that level of performance into a more traditional loudspeaker at a more accessible price point drove the initial design imperatives that created the Motion Series.

Folded Motion ® XT Tweeter

MartinLogan's Folded Motion tweeter uses an extremely low-mass diaphragm that "squeezes" air, requiring dramatically less excursion than the typical 1-inch dome tweeter. Its folded design allows for a much larger surface area (compared to that of a typical 1-inch dome tweeter), controlled dispersion characteristics, and incredibly low distortion. It's a marvel of audio engineering, capable of delivering much of the high-frequency detail and speed of a large dynamic electrostatic panel in a small space. Folded Motion XT tweeters take advanced thin-film transducer technology even further, with a 40% larger radiating surface and controlled 80x30-degree dispersion. This modification increases audible bandwidth without sacrificing detail and minimizes distortion to an unprecedented degree, while increasing the tweeter's efficiency and already lightning-fast response time. The result, superior realism and alarming specificity, is aurally astonishing and uniquely MartinLogan.

Powerful Aluminum-Cone Midrange and Bass Drivers

Custom-designed, low-distortion drivers pair high-power magnet structures with conical aluminum diaphragms to deliver massive excursion and audio output, preserve fine bass detail, and maximize power-handling capability—all without a hint of distortion. A unique concave dust cap design reinforces the strength and rigidity of the cone while reducing breakup modes.

The use of aluminum for the cones maximizes driver rigidity and strength without adding excessive weight. This, combined with the exceptional damping properties of aluminum, ensures the smooth, non-resonant response required for seamless blending with the high-resolution Folded Motion tweeters. An additional benefit of aluminum is its exceptional thermal conduction capability, allowing the cones to act as efficient heat sinks for the voice coils.

To ensure accuracy in the critical midrange, the mid-frequency drivers feature a specially designed "stiff" suspension. Stiffening the suspension (the spider and surround) raises the driver's resonant frequency and optimizes its performance to achieve a natural roll-off and inherently operate within an ideal range for mid-frequency reproduction (as opposed to a comparably sized woofer).

Proprietary Vojtko Crossover Networks

Premium Motion Series loudspeakers feature proprietary Vojtko crossover networks that utilize low-DF and polypropylene electrolytic capacitors, custom-wound inductors, and thermal and current protection.

Vojtko crossovers are named after MartinLogan's chief audio engineer, Joe Vojtko. His unique approach to crossover design is as big a part of the "MartinLogan Sound" as electrostatic and Folded Motion thin-film driver technologies. A Vojtko crossover is less a set of design requirements than a philosophy. Vojtko crossovers are designed so that all drivers are kept within their optimal frequency range and balanced with each other. The drivers themselves are as much a part of a Vojtko crossover as the capacitors and resistors. Before designing any crossover begins, the drivers are carefully selected or designed to operate within a very intentional frequency range and with precise, predictable performance parameters. Vojtko crossovers are always built with high-quality parts and care is taken to avoid overly complex topologies, a simple goal due to the careful selection of woofers and tweeters. The final (and most critical) aspect of a Vojtko Crossover is that the final voicing is conducted in a space that is indicative of a real-world environment. This pragmatic approach allows MartinLogan loudspeakers to sound their best in real rooms.

Modern design with luxurious finishes

Discreetly hidden behind fabric-wrapped magnetic grilles, the Folded Motion and aluminum cone drivers are held firmly in place beneath a matte black finish that masks the tweeter and woofer mounting hardware for a clean, modern aesthetic. The solid cabinets, designed to eliminate fidelity-compromising vibrations, are constructed from 18 mm (0.7-inch) MDF with 31 mm (1.2-inch) thick front baffles. The Motion 60XTi and 50XTi feature additional internal bracing to further reduce cabinet resonance.

MartinLogan's top-of-the-line Motion Series loudspeakers are available in three luxurious finishes and matching metallic finishes: gloss black with black grilles and gunmetal gray trim, matte white with silver grilles and trim, and red walnut with black grilles and champagne trim.

Custom 5-Way Tool-Free Binding Posts

High-quality, tool-free, gold-plated 5-way binding posts ensure a solid connection and accommodate a wide range of connections.

Two sets of binding posts allow bi-wire connections to increase signal-carrying conductors and allow each portion of the crossover to be coupled directly to the amplifier.

SPECIFICATIONS

Frequency Response: 50–25,000 Hz ± 3dB

Recommended amplifier power: 20—300 watts per channel

Horizontal dispersion: 80°

Vertical dispersion: 30°

Sensitivity: 94 dB / 2.83 volts/meter

Impedance: 4 ohms Compatible with 4, 6, or 8 ohm amplifiers

Crossover frequencies: 900 and 2,200 Hz

High-frequency transducer: 1.25" x 2.45" folded-motion XT transducer with 4.5" x 2.85" diaphragm

Low-frequency transducer: Two 6.5" aluminum cones with cast polyester basket. Asymmetrical, non-resonant chamber format. Rigid structured dust cap to reduce cone breakdown modes

Components: Custom air core voice coil and low DCR steel laminate inductors. Polyester film capacitors in series and low DF electrolytic capacitors in parallel. Tweeter thermal/current protection

Inputs: Tool-free 5-way custom binding posts

Weight: 13.8 kg

Dimensions: 19.2 x 58 x 32.6 cm