MartinLogan SLMX3 LCR 3-Channel Passive Soundbar - Gloss Black - Each
✔ 60-Day Money-Back Guarantee — Try it risk-free for 60 days
✔ Free Shipping on orders over $49
✔ Financing Available — Pay over time | Learn more
✔ Price Guarantee — We match authorized dealer pricing | Details
✔ Expert Help — Call us at 800-942-0220 weekdays 9am–6pm EST
Delivery and Shipping
Delivery and Shipping
- Audio Advisor will ship products anywhere in the United States, including Alaska, Hawaii, and U.S. Territories.
- For more information, visit our Delivery & Shipping Policies.
Three Speakers. One Slim Bar.
The MartinLogan Motion SLM X3 is not one speaker. It is three. The left, center, and right channels all live in one slim bar. Each one gets its own tweeter and its own woofers.
The tweeters are thin-film Folded Motion drivers. They come from the same design work behind MartinLogan's big flat-panel speakers. They start and stop fast, so voices and detail stay clean. Six 4-inch fiber-cone woofers fill in below them.
This bar is passive. That means your receiver powers it. Most sound bars have small amps built in, so you are stuck with what you get. Not here. Buy a better receiver later and this bar will sound better too.
It is 48 inches wide and just 1.45 inches thin. That suits a 50-inch TV or larger. On the wall it sticks out less than 2 inches with the bracket and grille. Or set it on a shelf with the feet in the box. Add a subwoofer for deep bass and your whole front stage is done.
Key Features
Three Folded Motion Tweeters — One for each channel. Thin-film design for clear, fast highs.
Six 4" Fiber-Cone Woofers — They move a lot of air for such a thin cabinet.
Passive Design — Your receiver drives it, so better gear means better sound.
Only 1.45" Thin — Sticks out less than 2 inches from the wall. Shelf feet are included.
Easy to Drive — 93dB sensitivity. Almost any receiver can run it well.
Specifications
- Type: 3-Channel (LCR) Passive Soundbar
- Tweeters: 3 x Folded Motion (1" x 1.4" transducer; 5.25" x 1.75" diaphragm)
- Woofers: 6 x 4" (10.2cm) Fiber Cone
- Frequency Response: 120Hz - 25kHz ± 3dB
- Sensitivity: 93dB / 2.83V / 1m
- Impedance: 4 Ohms (compatible with 4, 6, or 8 Ohm rated amplifiers)
- Recommended Amplifier Power: 20 - 140W Per Channel
- Crossover: 3,000Hz; Air-Core Inductors with System Thermal/Current Protection
- Dispersion: 80° x 80°
- Inputs: Low-Profile Push Style (3 Channel Pairs)
- Dimensions: 6.3"H x 48"W x 2"D (1.83" total wall protrusion with bracket and grille)
- Weight: 13 lbs
- Included: Wall-Mount Bracket, Shelf Feet, Magnetic Grille
- Finish: Gloss Black
- Warranty: 5 Years
- Sold By: Each
Why Audio Advisor?
- 40+ Years of Expertise – Helping music lovers build better systems since 1981.
- 60-Day Money-Back Guarantee – Hear it in your own system with confidence.
- Real Product Experts – Friendly advice before and after your purchase.
- Free Shipping – On qualifying orders over $49.
- Flexible Financing – Convenient payment options available.
- L-C-R soundbar
- Slim design
- High Frequency Driver: Three 1" x 1.4" Folded Motion Transducers with 5.25" x 1.75" diaphragm
- Low Frequency Drivers: Six 4" paper cone, sealed cabinet
- Components: Custom air core coil inductors, polyester film capacitors in series and low DF electrolytic capacitors in parallel, overall system thermal/current protection
- Binding Posts: Push style
- Frequency Response: 120–23,000 Hz ± 3 dB
- Dispersion: 80° x 80°
- Sensitivity: 93 dB @ 2.83 volts/ meter
- Impedance: 4 Ohms. Compatible with 4, 6 or 8 Ohm rated amplifiers.
- Crossover Frequency: 3,000 Hz (2-way design)
- Recommended Amplifier Power: 20–140 watts
- Weight: 13 lbs.
- Dimensions with wall bracket (HxWxD): 6.3" x 48" x 2"
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.








