The slender Motion SLM speakers feature an advanced resolution Folded Motion™ tweeter, two 4-inch high-excursion fiber cone woofers and two passive bass radiators for maximum controlled low-end bass extension - all in an ultra-slim profile designed expressly for super-thin TVs. For even greater low-end bass extension, step up to the Motion SLM XL which adds two extra 4-inch passive radiators and aesthetically matches 65-inch and larger TV sizes. Motion SLM X3’s 3-channel soundbar design gives you a complete stereo and center soundstage, with three Folded Motion tweeters and six 4-inch ultra-slim fiber cone woofers.

At a Glance

Model: MartinLogan Motion SLM XL
Sold as: Single (price is each)
Available Finishes: Gloss Black
Frequency Response: 100–25,000 Hz ±3dB
Recommended Amplifier Power: 20—140 watts per channel
Horizontal Dispersion: 80°
Vertical Dispersion: 80°
Sensitivity: 94 dB/2.83 volts/meter
Impedance: 4 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers.

Key Features

Ultra-Slim Folded Motion® Speakers
The slender Motion SLM speakers feature an advanced resolution Folded Motion™ tweeter, two 4-inch high-excursion fiber cone woofers and two passive bass radiators for maximum controlled low-end bass extension - all in an ultra-slim profile designed expressly for super-thin TVs. For even greater low-end bass extension, step up to the Motion SLM XL which adds two extra 4-inch passive radiators and aesthetically matches 65-inch and larger TV sizes. Motion SLM X3’s 3-channel soundbar design gives you a complete stereo and center soundstage, with three Folded Motion tweeters and six 4-inch ultra-slim fiber cone woofers.

Inspired Sound
Inspired by MartinLogan's ultra-high-end electrostatic loudspeakers, the Motion Series was created to provide stunning sound for your ultimate-performance home theater or stereo. MartinLogan's dedicated in-house engineers carefully crafted the Motion Series to create an extremely affordable and compact product line that seamlessly blends our exquisite Folded Motion transducers with powerful, compact bass technology. The result is a smooth, refined sound with stunning dynamic range and jaw-dropping clarity.

Slender Profile & Stunning Performance
The secret to the Motion SLM's outstanding performance is the innovative dual 4-inch, ultra-slim fiber cone woofers and dual 4-inch high-velocity passive bass radiators, paired with a Folded Motion tweeter to create stunning acoustical alchemy typically found in much larger speaker systems. Hidden discretely underneath the grille, the drivers are held securely in place by a solid, black-anodized brushed aluminum baffle. The high-gloss black SLM cabinet is only 1.45-inches thin, for a total wall protrusion of 1.83-inches with magnetic grille and included wall mount bracket.

On-Wall or On-Shelf Versatility
With keyhole slots on the speaker's back panel that attach easily to the included wall bracket, you'll have the SLM wall-mounted and playing in no time. While we created Motion SLM speakers to wall mount next to ultra-flat panel TVs, that's not their only application. Included* with each speaker is a curved black base to allow them to sit on a shelf or equipment cabinet (* SLM or SLM XL only).

Frequency Response	100–25,000 Hz ±3dB
Recommended Amplifier Power	20—140 watts per channel
Horizontal Dispersion	80°
Vertical Dispersion	80°
Sensitivity	94 dB/2.83 volts/meter
Impedance	4 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers.
Crossover Frequency	3,100 Hz
High Frequency Transducer	1" × 1.4" (2.6cm × 3.6cm) Folded Motion Transducer with 5.25" × 1.75" (13.3cm × 4.4cm) diaphragm
Low Frequency Transducer	Two 4” (10.2cm) paper cone. Four 4” (10.2cm) paper cone passive radiators.
Components	Custom air core coil inductors. Polyester film capacitors in series and low DF electrolytic capacitors in parallel. Overall system thermal/current protection.
Inputs	Low-profile push style
Weight	9 lbs. (4.1 kg)
Dimensions	34.1" x 6.4" x 1.89 " (86.7cm x 16.2cm x 4.8cm)