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MartinLogan Motion XT CI XTC8-HT

In-ceiling speaker with angled baffle

Item # 839XTC8HT

Going in-ceiling for your home theater's front channels? An angled-baffle design makes this speaker a terrific choice.

Going in-ceiling for your home theater's front channels? An angled-baffle design makes this speaker a terrific choice.

Item # 839XTC8HT

In stock
$1,099.99 each

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About the MartinLogan Motion XT CI XTC8-HT

Fantastic in-ceiling sound from MartinLogan

We don't typically recommend in-ceiling speakers for your home theater's front channels. That's because conventional designs fire straight downward, which can make sound seem disconnected from what you see on the screen.

Fantastic in-ceiling sound from MartinLogan

We don't typically recommend in-ceiling speakers for your home theater's front channels. That's because conventional designs fire straight downward, which can make sound seem disconnected from what you see on the screen.

The MartinLogan Motion XT CI XTC8-HT is a rare exception of an in-ceiling speaker that's well-suited for reproducing your home theater's left, center, or right channel. Its angled baffle directs sound down and toward you, making a movie's soundtrack feel like it's coming from the action unfolding on the screen instead of several feet above it.

MartinLogan Motion XT CI XTC8-HT in-ceiling speaker

This speaker's angled-baffle design helps it direct sound toward your listening position.

An acclaimed tweeter delivers smooth, sweet highs

One of the reasons the Motion XT CI XTC8-HT sounds so good is its Folded Motion® tweeter.

This unique, accordion-style design yields quick, accurate, and very smooth highs. The Folded Motion tweeter is paired here with an 8" woven fiberglass woofer for punchy bass and textured midrange.

Build a Motion Series home theater

The XTC8-HT makes a good match for other MartinLogan Motion Series speakers. Pair it with any of these models for an immersive home theater experience:

DIY installation 

If this is a do-it-yourself install, check out our guide to installing in-ceiling speakers, along with our selection of in-wall speaker wire. You can paint the included magnetic grille to have your speaker blend in with your décor.

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Product highlights:

  • ideal for an in-ceiling music or home theater system
  • angled-baffle design for directing sound toward your listening position
Drivers and specs:
  • 1.27" x 2.4" Folded Motion® tweeter for smooth, natural highs
  • 8" woven fiberglass woofer for punchy bass and textured midrange
  • frequency response: 51-25,000 Hz (±3 dB)
  • recommended amplifier power: 50-300 watts
  • sensitivity: 91 dB
  • impedance: 8-ohms compatible
  • sound direction can be changed by rotating the speaker assembly before moving the mounting locks into place
  • ultra-thin bezel and paintable magnetic grille to match your décor
  • optional pre-construction brackets help provide a precise, secure installation
Dimensions and warranty:

What's in the box:

  • In-ceiling loudspeaker
  • Grille
  • T20 torx-bit
  • User's Manual
  • Cutout Template

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More details on the MartinLogan Motion XT CI XTC8-HT

Stacey B.

Features & specs

Features
Quantity in Package Single
Tweeter Folded Motion Ribbon
Aimable Tweeter No
Woofer Composition Fiberglass
Woofer Surround Rubber
Moisture-resistant No
Outdoor-rated No
Connector Type Spring post
Bi-Amp Inputs No
Built-in Back-box No
Specs
Tweeter Size 1" x 1.4"
Midrange Size N/A
Speaker Shape Round
Woofer Size 8
Cutout Width 11.5
Cutout Height 11.5
Power Range (Watts) 50-150
Sensitivity 91 dB
Impedance (Ohms) 8
Frequency Response 51-25kHz
Parts Warranty 5 Years
Labor Warranty 5 Years

Product Research

Features

MartinLogan Motion XT CI Series: MartinLogan Motion XT CI speakers sound incredible in practically any room. Regardless of the environment, the Motion XT CI speakers just sound better, more articulate, more detailed, and more realistic. With Controlled Dispersion and one of the most responsive tweeters (FMT XT) in the industry, these in-ceiling and in-wall loudspeakers can compete with and often exceed the performance of many traditional cabinet loudspeakers.

Home Theater Application: The "HT" version of the XTC8 features a fixed angle mounting of the tweeter and woofer in order to provide a massive improvement in performance for listeners who are farther away. This is the perfect choice for when a speaker must be mounted apart from where the listener will be standing, walking or sitting, like in a home theater. When being used as the front or center speaker in a home theater, the listener is typically around 10' or farther away, yet typical in-ceiling speakers point straight down placing the sweet spot directly in front of the screen. By angling the drivers toward the listener, a very noticeable increase in performance is realized. The same holds true in whole house music systems where speakers are often located farther away from where the listener spends most of their time. In situations like this, the angled "HT" models provide a very real, and very noticeable increase in performance.

FMT (Folded Motion Tweeter) XT: MartinLogan's signature Folded Motion Tweeter XT utilizes an extremely low-mass diaphragm that "squeezes" air, thus requiring significantly less excursion than the typical 1" dome tweeter. Its folded design allows for a much larger surface area (compared to that of a regular 1" dome tweeter), controlled dispersion characteristics, and vanishingly low distortion. It delivers much of the high-frequency detail, speed and response of a large, dynamic electrostatic panel in a small space. The FMT XT increases audible bandwidth without sacrificing detail and reduces distortion to an incredibly low level while increasing efficiency and the tweeter's already lightning-fast response time. The result is greater clarity, output and efficiency.

  • Thin-Film Transducer Design: This thin-film transducer design packs all the accuracy and delicacy of an electrostatic panel into a small space. Folding the dramatically lightweight film into an accordion-like structure increases the surface area, giving the Folded Motion XT 8-10x greater surface area than typical tweeters. This ideal combination of light and large produces superior accuracy, extended frequency bandwidth and higher output capability; all with a faster, more efficient transient response, and virtually zero distortion. In these characteristics, the Folded Motion Tweeter XT design can mimic the performance of a large electrostatic panel in the confines of a more traditional loudspeaker enclosure.
  • 80x30 Degree Controlled Dispersion: MartinLogan Motion XT CI loudspeakers feature Controlled Dispersion to improve the clarity and overall quality of your music and media. The Folded Motion Tweeter XT further focuses the sound into an 80x30 degree dispersion pattern to further reduce the harmful acoustic effects presented by nearly every room. By focusing the sound on the actual seating area and not wasting energy on spaces where no one is sitting (IE: the ceiling) the XTC8-HT achieves greater sound quality by removing unwanted sound reflections, while simultaneously reducing the potential for distracting amounts of sound to travel into unwanted areas of your home.

Woven Kevlar Woofer Cone: The 8" midbass woofer features a very lightweight woven Kevlar cone specifically engineered to keep pace with the lightning speed of the high erformance Folded Motion Tweeter XT. The high-performance midbass woofer offers both increased rigidity and lightness, plus a special Nomex layer on the back side of the cone material to increase clarity and realism even further by reducing resonance and ringing. The midbass woofer is house in a more substantial chassis than most in-ceiling speakers to strengthen the loudspeaker and provide a more accurate sound, similar to a cabinet on a traditional speaker.

Proprietary Vojtko Crossover Network: Vojtko Crossovers are hand-built from the highest quality components and avoid overly complex topologies. This crossover network has a straight-forward objective of delivering breathtaking realism. The proprietary Vojtko crossover design is just as crucial to MartinLogan's "Truth-in-Sound" Philosophy as their innovative electrostatic and Folded Motion thin-film driver technologies. Vojtko crossovers are named after MartinLogan's chief audio technologist, Joe Vojtko.

  • The proprietary crossover network is handcrafted using exceptional polypropylene and polyester capacitors, custom wound and large steel laminate low-DCR inductors, and double thick PCBs. This precision-tuned network preserves even the most microscopic sonic nuances while handling the full dynamics of any source. It's a recipe for vanishingly low distortion and seamless driver integration.
  • The most critical aspect of a Vojtko crossover design is the final voicing, always conducted in a "real-world" environment. This uniquely pragmatic approach guarantees that the Motion XT CI speaker delivers MartinLogan's "Truth-in-Sound" in any room, including yours.

Micro-Perforated Grille: All MartinLogan Motion XT CI in-ceiling loudspeaker features an ultra-low profile, paintable, micro-perforated grille with no visible bezel for a near-invisible integration in almost any ceiling. A series of powerful magnets hidden inside the speaker quickly secure grilles into place, reducing the risk of warping or damage during installation. The micro-perforated grille only protrudes 0.1875" from the ceiling. The grille can be painted to match the color of your ceiling.

In-Ceiling Installation: The XTC8-HT speaker installs in drywall (0.25"-1.0" thick) between ceiling-joists and requires a round cutout that measures 11.5" (diameter) x 7.125" (depth). The speaker secures in the ceiling using the integrated "dog-ear" mounting clamps. There needs to at least 0.75" of clearance around the inside of the cutout to accommodate the "dog-ear" mounting clamps. Increasing the rigidity of your ceilking may improve sonic performance. To do this consider adding cross bracing behind the ceiling approximately 12" around the speaker.

Note: Always be careful to avoid electrical wires behind the ceiling surface.

Spring-Post Terminals: The MartinLogan XTC8-HT is outfitted with a set of spring-pots terminals for connection of your in-ceiling speaker wire. The spring-post terminals will accept bare wire (up to 12AWG) and banana plugs (single or dual).

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