Martin Logan Motion Foundation C1

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The Motion Foundation C1 is a compact, high-performance center-channel speaker engineered for crystal-clear dialogue and powerful playback in home theater systems. Featuring a Gen2 Obsidian Folded Motion tweeter with waveguide and dual 5.5″ aluminum mid-bass drivers, it delivers a wide, coherent soundstage with controlled dispersion—ideal for varied seating positions. The anti-lobing 2.5‑way crossover and rear-ported cabinet ensure balanced, room-filling bass from a compact housing.

Martin Logan Motion Foundation C1 Center Channel Speaker

  • Gen2 Obsidian Folded Motion® Tweeter S with waveguide delivers ultra-fast, low‑distortion highs and broad 90°×90° dispersion for uniform coverage
  • Folded Motion® Waveguide enhances tweeter control, reducing room reflections and maintaining clarity throughout the listening area
  • Dual 5.5″ aluminum mid-bass drivers borrowed from ML’s higher-end Motion XT series provide tight mids and full-bodied lower frequencies
  • Anti‑lobing 2.5‑way crossover design emulates larger, more advanced center channels in a compact, furniture-friendly cabinet
  • Bass-reflex (rear-ported) enclosure yields deep, controlled bass down to 53 Hz (±3 dB)
  • High sensitivity (91 dB) & 4 Ω impedance, ideal for driving with modest 15–100 W amplifiers
Frequency Response

53 Hz - 23 kHz ± 3 dB

Tweeter Dispersion (horizontal x vertical)

90° x 90°

Recommended Amplifier Power

15 - 100 watts

Sensitivity

91 dB

Impedance

4 ohms

High Frequency Driver

0.94” x 1” (2.4 x 2.5cm) Gen2 Folded Motion® Tweeter S with 3.5 in2 (22.6 cm2) diaphragm.

Crossover Frequency

2,900 Hz, 3,200 Hz (2.5-way)

Mid-Frequency Drivers

2x 5.5” (14cm) aluminum cone with cast aluminum basket. Non-resonant sealed chamber format. Unibody cone construction.

Cabinet

Rear Ported

Binding Post Inputs

5-way Binding Posts (Non Bi-Wire)

Weight

18lbs / 15.4kg

Dimensions (H x W x D)

7-5/8” x 20” x 10”
20.3cm x 61cm x 36.8cm

Finish

Black, Walnut, and Satin White

Legendary MartinLogan Sound

Legendary MartinLogan Sound

MartinLogan speakers are known for their exceptional articulation, detail and realism, regardless of the listening environment. By using advanced thin-film technologies and Controlled Dispersion, MartinLogan delivers a unique and unparalleled listening experience that is not commonly found in other speakers.

Legendary MartinLogan Sound

MartinLogan speakers are known for their exceptional articulation, detail and realism, regardless of the listening environment. By using advanced thin-film technologies and Controlled Dispersion, MartinLogan delivers a unique and unparalleled listening experience that is not commonly found in other speakers.

Legendary MartinLogan Sound

Gen2 Obsidian Folded Motion Tweeter S

The Gen2 FMT S offers effortless performance, unmatched by conventional technologies. By folding thin film material, MartinLogan is able to pack more surface area into a small space. Large surface area, light weight and low excursion means an incredibly fast and responsive tweeter capable of reproducing the most nuanced content with stunning detail and clarity.

Gen2 Obsidian Folded Motion Tweeter S

The Gen2 FMT S offers effortless performance, unmatched by conventional technologies. By folding thin film material, MartinLogan is able to pack more surface area into a small space. Large surface area, light weight and low excursion means an incredibly fast and responsive tweeter capable of reproducing the most nuanced content with stunning detail and clarity.

Folded Motion® Waveguide

Enhances the Controlled Dispersion of the tweeter, blanketing the listening area with incredible detail and precision. Avoids performance robbing room reflections and provides a more consistent sound across a wider seating area.

Folded Motion® Waveguide

Enhances the Controlled Dispersion of the tweeter, blanketing the listening area with incredible detail and precision. Avoids performance robbing room reflections and provides a more consistent sound across a wider seating area.

Aluminum Mid-Bass Driver

Using trickle down technology from MartinLogan’s own Motion XT and Motion Series, the B2 uses the exceptional properties of Aluminum to maximize clarity, detail, and output from the mid-bass driver.

Aluminum Mid-Bass Driver

Using trickle down technology from MartinLogan’s own Motion XT and Motion Series, the B2 uses the exceptional properties of Aluminum to maximize clarity, detail, and output from the mid-bass driver.

Anti-Lobing Center Channel Design

Like its more premium siblings, the C100 and C10, the C1 also utilizes a 2.5-Way crossover design to eliminate lobing and preserve the tonality of the source material. This results in a significant reduction of negative effects on sound reproduction, leading to a more precise and accurate listening experience.

Modern Design Featuring Timeless Finishes

Modern Design Featuring Timeless Finishes

Motion® Foundation® models are available in 3 timeless finishes to compliment any decor: Walnut with Bronze trim, Black with Gunmetal trim, or Satin White with Silver trim.

Modern Design Featuring Timeless Finishes

Motion® Foundation® models are available in 3 timeless finishes to compliment any decor: Walnut with Bronze trim, Black with Gunmetal trim, or Satin White with Silver trim.

Modern Design Featuring Timeless Finishes
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