MartinLogan Motion SLM X3
Best ultra-slim soundbar for elevating thin-TV audio in minimalist home theaters.
The MartinLogan Motion SLM X3 is a 3-channel soundbar designed to deliver a complete stereo and center soundstage, featuring three Folded Motion tweeters and six 4-inch ultra-slim fiber cone woofers. Inspired by MartinLogan's high-end electrostatic loudspeakers, this series aims to provide stunning sound for home theaters and stereo systems. It addresses the audio compromises made by ultra-thin TVs, offering a clean and easy solution to elevate your audio experience.
$1299.99
Owner Satisfaction
4.5
/ 5
Category Rank
3269
/ 8447
#3269 in Speakers
Price vs Category Average
-11%
Below average
Frequency Response
12023000
/ –, Hz
Who it's for
- Minimalists seeking a sleek aesthetic for modern home theaters
- Audiophiles craving precise and articulate high-frequency detail
- Homeowners needing flexible placement for unique room layouts
Who should skip it
- Bass enthusiasts requiring deep, cinematic low-end impact
- Budget-conscious shoppers prioritizing value over premium design
- Casual listeners avoiding the cost of high-end amplification
Performance breakdown
High-Frequency Clarity
Folded Motion tweeters deliver crisp, detailed highs that cut through any mix.
Form Factor Integration
Ultra-slim profile disappears seamlessly beneath modern, wall-mounted television displays.
Soundstage Width
Three discrete channels create an expansive, immersive front-stage audio experience.
Low-End Extension
Slim woofers prioritize aesthetics, requiring a dedicated subwoofer for cinematic bass impact.
Build Quality
Premium high-gloss finish and robust construction reflect high-end audio engineering standards.
Installation Versatility
Included wall mount and kick-stand provide flexible placement options for any room.
Key Specs
Frequency Response
120–23,000 Hz
Sensitivity
93 dB
Impedance
4 Ohms
Crossover Frequency
3,000 Hz
Recommended Amplifier Power
20–140 watts
Weight
13 lbs.
Dimensions
6.3" x 48" x 2"
Drivers
3 x Folded Motion Tweeters
Features
- Three discrete channels for L-C-R sound
- Ultra-slim design for discreet placement
- Folded Motion tweeter technology
- Six 4" ultra-slim fiber cone woofers
- Includes wall mount bracket and kick-stand
- High-gloss black finish
- Custom-designed crossover components
- Designed to overcome audio compromises of thin TVs
What customers say
Customers consistently praise the MartinLogan Motion SLM X3 for its exceptional sound quality and sleek, unobtrusive design. Reviewers frequently highlight the speaker's clear, detailed audio reproduction, noting its ability to deliver an immersive listening experience. The slim profile and elegant aesthetics are also a significant draw, allowing for seamless integration into various home environments without compromising acoustic performance. Many find these speakers to be a remarkable blend of sophisticated sound and modern visual appeal.
Know before you buy
Yes, this is a passive soundbar, meaning it does not have built-in amplification. You will need to connect it to an external AV receiver or amplifier to power the three discrete channels.
Absolutely. The SLM X3 includes a kick-stand, allowing you to place it securely on a media console or shelf directly below your television.
Given its frequency response starts at 120 Hz, the SLM X3 is designed to handle mid and high frequencies exceptionally well, but it will lack deep bass. For a complete home theater experience, we highly recommend pairing it with a dedicated subwoofer to handle the low-end frequencies.
Folded Motion tweeters use a pleated diaphragm that moves air much faster than a traditional dome. This design results in lower distortion and a wider, more detailed soundstage that mimics the clarity of MartinLogan’s high-end electrostatic speakers.
It is compatible with most standard receivers, provided they can handle a 4-ohm load. Since it is rated for 20–140 watts, ensure your amplifier is capable of driving 4-ohm speakers to get the best performance.
Yes, the SLM X3 is specifically designed as a 3-channel L-C-R (Left-Center-Right) soundbar intended for horizontal mounting. It includes the necessary wall-mount bracket to sit flush against the wall.
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