
MartinLogan Motion XT Series In-Ceiling Speakers (Single)
The Motion XT CI series uses the larger surface area of the Folded Motion XT tweeter to provide even more of the clarity, output, and efficiency that our signature FMT is famous for. MartinLogan engineers have combined this incredible tweeter with high performance woven Kevlar woofers, and a more substantial chassis to elevate the performance to the next level. With Motion XT CI, the difference is in the details.
For true next level performance over the MC8 (its Motion CI counterpart), the XTC8 features our largest and highest performing FMT XT and a woven Kevlar woofer. These features make a noticeable improvement to the sound but also help to reduce unwanted room acoustic artifacts. With a more controlled 80° x 30° dispersion, the FMT XT is a powerful tool that delivers unheard levels of realism from a CI speaker in even the most acoustically challenging rooms. The XTC8 is a great choice for a high performance whole house music system, or for premium home theater. Its unique combination of high-performance drivers and controlled dispersion allows you to control where sound is placed in a room and provides an even better experience.
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 feet 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.
| Model | Motion XTC8 | Motion XTC8-HT |
| Frequency Response | 51 - 25,000 Hz ±3dB | 51 - 25,000 Hz ±3dB |
| Tweeter Dispersion (horizontal x vertical) | 30 x 80 degrees | 30 x 80 degrees |
| Recommended Amplifier Power | Range 50–300 Watts | Range 50–300 Watts |
| Sensitivity | 91dB @2.83V/ 1 meter | 91dB @2.83V/ 1 meter |
| Impedance |
|
|
| Crossover | 2270Hz | 2000Hz |
| Driver Configuration |
|
|
| High Frequency Transducer | FMT Transducer 1.27” x 2.4” (3.22cm x 6.09cm) Opening 4.5” x 2.75” (11.43cm x 6.98cm) Diaphragm | FMT Transducer 1.27” x 2.4” (3.22cm x 6.09cm) Opening 4.5” x 2.75” (11.43cm x 6.98cm) Diaphragm |
| Low Frequency Transducer | One 8” (20.32 cm) cast aluminum basket, black Kevlar with Nomex backer cone, Open back chamber format. Concave dust cap. | One 8” (20.32 cm) cast aluminum basket, black Kevlar with Nomex backer cone, Open back chamber format. Concave dust cap. |
| Dimensions (Overall size) | 10.35” x 5.30” (26.30 x 13.46cm) | 12.68” x 7.15” (32.2 x 18.14cm) |
| Projection From Wall Surface | 0.33” (23.5cm) | 0.26” (0.65cm) |
| Required Wall Opening (includes tolerance) | 9.25” (23.5cm) diameter | 11.5” (29.1cm) diameter |
| Depth Behind Wall Surface | 5.50” (13.97cm) | 7.03” (17.84cm) |
| Bracket (sold separately) | C8 - $20.00 | C8-HT - $20.00 |
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MartinLogan Motion XT Series In-Ceiling Speakers (Single)
The Motion XT CI series uses the larger surface area of the Folded Motion XT tweeter to provide even more of the clarity, output, and efficiency that our signature FMT is famous for. MartinLogan engineers have combined this incredible tweeter with high performance woven Kevlar woofers, and a more substantial chassis to elevate the performance to the next level. With Motion XT CI, the difference is in the details.
For true next level performance over the MC8 (its Motion CI counterpart), the XTC8 features our largest and highest performing FMT XT and a woven Kevlar woofer. These features make a noticeable improvement to the sound but also help to reduce unwanted room acoustic artifacts. With a more controlled 80° x 30° dispersion, the FMT XT is a powerful tool that delivers unheard levels of realism from a CI speaker in even the most acoustically challenging rooms. The XTC8 is a great choice for a high performance whole house music system, or for premium home theater. Its unique combination of high-performance drivers and controlled dispersion allows you to control where sound is placed in a room and provides an even better experience.
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 feet 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.
| Model | Motion XTC8 | Motion XTC8-HT |
| Frequency Response | 51 - 25,000 Hz ±3dB | 51 - 25,000 Hz ±3dB |
| Tweeter Dispersion (horizontal x vertical) | 30 x 80 degrees | 30 x 80 degrees |
| Recommended Amplifier Power | Range 50–300 Watts | Range 50–300 Watts |
| Sensitivity | 91dB @2.83V/ 1 meter | 91dB @2.83V/ 1 meter |
| Impedance |
|
|
| Crossover | 2270Hz | 2000Hz |
| Driver Configuration |
|
|
| High Frequency Transducer | FMT Transducer 1.27” x 2.4” (3.22cm x 6.09cm) Opening 4.5” x 2.75” (11.43cm x 6.98cm) Diaphragm | FMT Transducer 1.27” x 2.4” (3.22cm x 6.09cm) Opening 4.5” x 2.75” (11.43cm x 6.98cm) Diaphragm |
| Low Frequency Transducer | One 8” (20.32 cm) cast aluminum basket, black Kevlar with Nomex backer cone, Open back chamber format. Concave dust cap. | One 8” (20.32 cm) cast aluminum basket, black Kevlar with Nomex backer cone, Open back chamber format. Concave dust cap. |
| Dimensions (Overall size) | 10.35” x 5.30” (26.30 x 13.46cm) | 12.68” x 7.15” (32.2 x 18.14cm) |
| Projection From Wall Surface | 0.33” (23.5cm) | 0.26” (0.65cm) |
| Required Wall Opening (includes tolerance) | 9.25” (23.5cm) diameter | 11.5” (29.1cm) diameter |
| Depth Behind Wall Surface | 5.50” (13.97cm) | 7.03” (17.84cm) |
| Bracket (sold separately) | C8 - $20.00 | C8-HT - $20.00 |
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Description
The Motion XT CI series uses the larger surface area of the Folded Motion XT tweeter to provide even more of the clarity, output, and efficiency that our signature FMT is famous for. MartinLogan engineers have combined this incredible tweeter with high performance woven Kevlar woofers, and a more substantial chassis to elevate the performance to the next level. With Motion XT CI, the difference is in the details.
For true next level performance over the MC8 (its Motion CI counterpart), the XTC8 features our largest and highest performing FMT XT and a woven Kevlar woofer. These features make a noticeable improvement to the sound but also help to reduce unwanted room acoustic artifacts. With a more controlled 80° x 30° dispersion, the FMT XT is a powerful tool that delivers unheard levels of realism from a CI speaker in even the most acoustically challenging rooms. The XTC8 is a great choice for a high performance whole house music system, or for premium home theater. Its unique combination of high-performance drivers and controlled dispersion allows you to control where sound is placed in a room and provides an even better experience.
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 feet 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.
| Model | Motion XTC8 | Motion XTC8-HT |
| Frequency Response | 51 - 25,000 Hz ±3dB | 51 - 25,000 Hz ±3dB |
| Tweeter Dispersion (horizontal x vertical) | 30 x 80 degrees | 30 x 80 degrees |
| Recommended Amplifier Power | Range 50–300 Watts | Range 50–300 Watts |
| Sensitivity | 91dB @2.83V/ 1 meter | 91dB @2.83V/ 1 meter |
| Impedance |
|
|
| Crossover | 2270Hz | 2000Hz |
| Driver Configuration |
|
|
| High Frequency Transducer | FMT Transducer 1.27” x 2.4” (3.22cm x 6.09cm) Opening 4.5” x 2.75” (11.43cm x 6.98cm) Diaphragm | FMT Transducer 1.27” x 2.4” (3.22cm x 6.09cm) Opening 4.5” x 2.75” (11.43cm x 6.98cm) Diaphragm |
| Low Frequency Transducer | One 8” (20.32 cm) cast aluminum basket, black Kevlar with Nomex backer cone, Open back chamber format. Concave dust cap. | One 8” (20.32 cm) cast aluminum basket, black Kevlar with Nomex backer cone, Open back chamber format. Concave dust cap. |
| Dimensions (Overall size) | 10.35” x 5.30” (26.30 x 13.46cm) | 12.68” x 7.15” (32.2 x 18.14cm) |
| Projection From Wall Surface | 0.33” (23.5cm) | 0.26” (0.65cm) |
| Required Wall Opening (includes tolerance) | 9.25” (23.5cm) diameter | 11.5” (29.1cm) diameter |
| Depth Behind Wall Surface | 5.50” (13.97cm) | 7.03” (17.84cm) |
| Bracket (sold separately) | C8 - $20.00 | C8-HT - $20.00 |

















