MartinLogan Motion 4i Compact Bookshelf Speaker - Folded Motion Tweeter, 4" Woofer - Gloss Black (Single)

Product Description

The MartinLogan Motion 4i is a sophisticated bookshelf speaker that combines a compact form factor with audiophile-grade performance. It features the signature Folded Motion tweeter, which is engineered to provide a fast response and precise high-frequency detail. This makes the 4i an excellent choice for listeners who want clear and transparent audio in smaller rooms or as part of a high-end surround sound system.

Despite its small footprint, the Motion 4i delivers a rich sound thanks to its 4-inch high-excursion poly cone woofer and a specialized ported enclosure. This design enhances low-frequency extension, providing a balanced audio profile that belies the speaker's size. The elegant curved cabinet with a premium gloss black finish ensures that the speaker looks as good as it sounds, fitting perfectly into modern home decors.

Installation is highly flexible, as the Motion 4i can be placed on a shelf, stand, or mounted directly to the wall using the included adjustable bracket. Whether used for a dedicated stereo setup or as height/surround channels in a 4K home theater, this speaker offers the perfect blend of MartinLogan’s sonic precision and versatile, space-saving design.

Key Features

Signature Ribbon Tweeter Technology

• Folded Motion tweeter for lightning-fast response and low-distortion highs
• Large surface area ensures a wide and immersive soundstage
• Crystal-clear high-frequency reproduction up to 23 kHz

Compact and Powerful Design

• 4-inch poly cone woofer with rubber surround for accurate mid-bass
• Ported enclosure optimizes airflow for improved low-end performance
• High-gloss piano black finish for a premium aesthetic look

Flexible Mounting Options

• Includes an adjustable wall-mount bracket for easy installation
• Spring-post connectors provide a secure and clean wire connection
• Compact dimensions ideal for bookshelf, stand, or wall placement

Specifications

Audio Performance

Tweeter: Folded Motion Ribbon

Tweeter Size: 1 x 1.4 in

Woofer Size: 4 in (Poly Composition)

Frequency Response: 70 Hz – 23 kHz

Sensitivity: 90 dB

Impedance: 4 Ohms

Power Range: 20 – 150 Watts

Design & Dimensions

Enclosure Type: Ported (Bass Reflex)

Finish: Piano Lacquer Gloss Black

Dimensions: 12.68 x 5.68 x 5.68 in

Weight: 6 lb

Mounting: Wall-mountable (Bracket Included)

FAQ

Does this speaker come with a wall bracket?

Yes, the Motion 4i includes an adjustable wall-mount bracket in the box, making it easy to install on your wall right away.

Can I use these as front speakers for my TV?

Absolutely. They are excellent as primary stereo speakers in smaller rooms. For larger spaces, they also perform exceptionally well as surround or height channels.

What amplifier power is recommended?

The Motion 4i works best with amplifiers or receivers providing between 20 and 150 watts of power per channel.