MartinLogan Sistine 4XC In-Ceiling Speaker

The world's most sophisticated in-ceiling speaker features four drivers, including a Folded Motion XT obsidian tweeter, two 3.5-inch unidirectional multi-section carbon fiber cone midrange drivers with a Nomex® mount, and a perfectly matched 8-inch woofer combined with a premium Vojtko crossover network constructed from audiophile-grade components. A pre-installation bracket is available.

Flagship-Class In-Wall and In-Ceiling Speakers

From extreme home theater to transcendent 2-channel listening, Masterpiece CI is the pinnacle of discrete in-wall and in-ceiling speaker design - state-of-the-art truth-to-sound. Featuring ultra-fast, low-distortion Folded Motion XT Obsidian tweeters, class-leading Vojtko crossover networks, and unidirectional multi-section carbon fiber cone drivers with Nomex® baffles, the Masterpiece CI Series delivers the biggest, boldest, most lifelike performance possible—a tribute to the acoustic achievements of MartinLogan’s iconic masterpiece, our flagship floorstander.

Folded Motion® XT Obsidian Tweeter

MartinLogan’s signature Folded Motion tweeter utilizes an extremely low-mass diaphragm that “squeezes” air, requiring significantly 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 virtually no distortion. It’s a marvel of audio engineering that delivers much of the high-frequency detail and speed of a large dynamic electrostatic panel in a small space. Folded Motion XT tweeters further improve on thin-film transducer technology, with a 40 percent greater radiating surface area and a controlled 80 x 30-degree dispersion pattern. This change increases audible bandwidth without sacrificing detail, and minimizes distortion to an unprecedented degree by increasing the tweeter’s efficiency and already rapid response time. The result: superior realism and alarming specificity that is shockingly astonishing, and only from MartinLogan. Masterpiece Obsidian XT Folded Motion X Series tweeters feature a black diaphragm.

Powerful midrange and bass drivers with unidirectional carbon fiber cones with Nomex® backing

Custom-tuned, low-distortion drivers pair high-powered magnet structures with unidirectional multi-section carbon fiber cone diaphragms with a Nomex® backing to deliver massive excursion and audio output, preserve bass detail, and maximize power handling capacity—all without a hint of distortion. The use of unidirectional carbon fiber results in a cone that is twice as strong as steel with one-sixth the density, providing exceptional rigidity without adding excessive weight. The multi-section design of Masterpiece CI drivers serves to reduce resonant modes within the driver, allowing for a smoother response. Nomex backers improve the driver's overall performance by damping the cone to prevent deleterious ringing and reduce breakup modes, a key requirement for extremely rigid cone materials. These exceptional woofers ensure the smooth, non-resonant response necessary for seamless blending with the extreme precision of high-resolution folded-motion tweeters.

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 natural roll-off and inherently operate in an ideal range for mid-frequency reproduction (as opposed to a comparably sized woofer).

Each cone includes a concave dust cap that adds additional strength and rigidity while further reducing breakup modes. An inverted surround design maximizes space behind the grille cover to improve driver excursion, clarity and linearity.

Closed Back Box Enclosure

Sistine 4XC uses a dense, molded, ejection-molded back box with a sealed design that helps prevent sound from leaking through the wall into unintended areas of the home, while providing predictable airspace for the woofers to perform at their best.

The most significant benefit of a sealed, acoustically inert back box is predictable volume and a construction methodology that removes the variables of wall cavity size and build quality from the acoustic equation, ensuring consistent, accurate performance no matter the installation. By maintaining complete control over driver performance, crossover design, and cabinet construction, Masterpiece CI in-wall and in-ceiling speakers can deliver an emotionally immersive experience on par with the rarefied performance of the world’s most exceptional floorstanding speakers.

Die-Cast Aluminum Mounting Lock System

A simple yet robust die-cast aluminum mounting lock system maximizes strength while allowing for quick, hassle-free installation. Pocket screw holes help keep your drill steady, making installation a breeze. When not in use, the mounting blocks are secured within a freestanding housing. When moved into position, they firmly couple the chassis to the ceiling or wall, increasing the rigidity of the surfaces. If ever removed, the blocks retract and lock into their respective housings. Each speaker includes a full-size installation template with quick-reference instructions and die-cut guides for marking the cutout hole.

Ceiling Mount Handle

A mounting handle, included with Sistine 4XC, allows you to conveniently hold the ceiling speaker in place during complex overhead installations.

Spring-Loaded Binding Posts

Spring-loaded posts feature a large 4.5mm wire access hole and connect via banana plug, pin or 10AWG bare wire.

Micro-Perforated Grilles

Sistine 4XC features ultra-low profile, paintable, micro-perforated grilles with no visible frame for nearly invisible integration into any wall or ceiling. An array of powerful magnets hidden inside the speaker quickly secures the grilles in place, reducing the risk of warping or damage during installation. Optional square grilles are available for Sistine 4XC.

Proprietary Vojtko™Crossover Networks

Looking carefully handcrafted using only the finest polypropylene and polyester capacitors, custom wound, large-diameter steel-laminate low-DCR inductors, and double-thickness PCBs, Masterpiece CI Series crossovers utilize MartinLogan's proprietary Vojtko topology for remarkably low distortion and seamless driver integration. This precisely tuned network preserves even the most microscopic sonic nuances while handling the full dynamics of any source.

Vojtko crossovers are named after MartinLogan's chief audio technologist, Joe Vojtko. His unique approach to crossover design is as much a part of the "MartinLogan Sound" as are electrostatic and Folded Motion thin-film driver technologies. A Vojtko crossover is less a set of design requirements than a philosophy.

Hand-selected components

Vojtko crossovers are designed so that all drivers are kept in their optimal frequency range and balanced with each other. The drivers themselves are as much a part of a Vojtko crossover as capacitors and resistors. Before the design of any crossover begins, drivers are carefully selected or designed to operate in a very intentional frequency range and with precise, predictable performance parameters. Vojtko crossovers are always made from high-quality parts, and care is taken to avoid overly complex topologies—an easy goal with the careful selection of woofers and tweeters. The final (and most critical) aspect of a Vojtko Crossover is that the final vocal 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-world rooms.

Pre-installation brackets availableupon request at time of order

Pre-installation brackets are available for all Masterpiece CI Series models except the Statement 40XW, which requires unique installation considerations.

SPECIFICATIONS

Load Bass Reflex

Efficiency 92 db

Nominal impedance 4 ohms

Max. power 300 w

Min. power 20 w

Max frequency response 25000 hz

Min. frequency response 37 hz

Treble unit 26×36 mm

Bass unit 1×203 mm

Ways 2