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MartinLogan Motion® 6i

Center channel/multi-purpose home theater speaker with wall-mount brackets

1 Review

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Item # 839MO6IB

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Was: $279.99

Sale: -$28.00

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Our take on the MartinLogan Motion® 6i

I have a penchant for compact speakers that offer true-to-life sound — especially when they are as versatile as MartinLogan's Motion® 6i. This "LCR" speaker can be used as a left-, right-, or center-channel speaker in your home theater, all without taking up much space in your room. 

A multi-talented home theater speaker

I have a penchant for compact speakers that offer true-to-life sound — especially when they are as versatile as MartinLogan's Motion® 6i. This "LCR" speaker can be used as a left-, right-, or center-channel speaker in your home theater, all without taking up much space in your room. 

Mount it vertically or horizontally

You can mount the Motion 6i vertically to the left or right side of your wall-mounted TV. Or install it horizontally under your TV as a center channel. It even includes the wall-mount brackets, so you won't have to buy them separately.

An acclaimed tweeter delivers smooth, sweet highs

One of the reasons the Motion 6i sounds so good is its Folded Motion® tweeter. This unique, accordion-style design is quick, accurate, and very smooth. You'll enjoy clear, natural sound throughout its frequency range. A pair of 3-1/2 woofers flank the tweeter and deliver punchy midrange.

Expand your MartinLogan system

Building a MartinLogan surround sound system? I recommend using any of these MartinLogan Motion bookshelf speakers for voice-matched sound. For high-impact home theater, I recommend pairing this sleek speaker with a powered subwoofer for deeper bass performance.

Product Highlights:

  • elegantly curved cabinet with high-gloss piano black finish
  • speaker can be mounted horizontally or vertically
  • 1" x 1" Folded Motion tweeter
  • two 3-1/2" poly cone woofers with rigid dust caps
  • frequency response: 120-23,000 Hz (±3dB)
  • recommended amplifier power: 20-130 watts
  • sensitivity: 89 dB
  • impedance: 6 ohms
  • acoustic suspension (sealed) enclosure
  • perforated metal grille
  • custom-designed push-style binding posts accept pins, banana connectors, or bare wire
  • includes two wall-mount brackets
  • 17-1/2"W x 5-1/4"H x 4"D
  • weight: 5.7 lbs.
  • warranty: 5 years (with product registration)
  • Our 60-day money-back guarantee

What's in the Box:

  • LCR loudspeaker
  • Grille
  • 2 Wall-bracket
  • 2 Shoulder bolts
  • 4 Rubber bumpers
  • Cleaning cloth
  • User's Manual (En/Fr)
  • Installation template
  • Product Registration Card

MartinLogan Motion® 6i Reviews

Average Customer Review(s):

(1 Review)

Adequate speaker but below expectations

James from Kalamazoo, MI on 11/6/2017

Crutchfield Customer Review (What's this?)

The MLM 6i came quickly (kudos to Crutchfield), was packaged well, and easy to set up. I purchased this product to use as a dedicated center speaker for a surround sound entertainment system. I had been using a standard B&W speaker (the same as my right & left speakers etc), but dialogue was difficult to understand and I frequently had to turn on subtitles. I was hoping a dedicated center speaker would make a big difference in dialogue quality, but the improvement was modest, at best, even after playing with the various settings. At this point, I'm considering abandoning the speaker and buying a sound bar/subwoofer. I was very favorably impressed with Crutchfield. They were great to work with & I look forward to ordering from them in the future. Nonetheless, I am disappointed in the speaker.

Pros: Reasonably priced, easy set up. The advisor I purchased from was terrific.

Cons: Minimal improvement in sound quality of dialogue.

Crutchfield response on 11/14/2017 James, we're sorry you're disappointed with your speaker. Whenever you are not completely satisfied with anything you purchase from Crutchfield, please contact our Customer Support team at 1-800-955-9091. Purchases from Crutchfield can be returned or exchanged within 60 days of the purchase.

Hands-on research

Features and Specs

Enclosure Acoustic Suspension
Tweeter Folded Motion Transducer
Midrange size (inches) N/A
Woofer size (inches) 3-1/2
Connector Type Spring post
Power Range 20-130
Sensitivity 89 dB
Impedance (Ohms) 6
Frequency Response 120-23k Hz
Height (inches) 5-1/4
Width (inches) 17-1/2
Depth (inches) 4
Weight 5.7 lbs
Parts Warranty 5 Yrs w/ Registration
Labor Warranty 5 Yrs w/ Registration

Product Research


Folded Motion Tweeter: MartinLogan's Folded Motion tweeter helps give the 6i LCR loudspeaker its natural, realistic high frequency sound. Lightning fast transient response, combined with a large surface area (8x that of a typical 1" dome tweeter) creates clear, dynamic, and precise sound. The 0.94" x 1" Folded Motion tweeter works by moving air (which creates sound) perpendicular to the folded ridges of the diaphragm, similar to how an accordion works. This extremely low mass diaphragm "squeezes" air and requires almost 90% less excursion than the typical 1" dome tweeter, which drastically minimizes distortion while providing a lightning fast response time. The increased surface area also provides a wide, yet controlled sound dispersion (80°x80°) to create a realistic and carefully etched sound stage.

Dual Poly Cone Woofers: The Folded Motion tweeter is flanked by two 3.5" poly cone woofers with a stamped steel basket housed in a non-resonant asymmetrical chamber. The paper cone woofers use a rigid structured dust cap and butyl rubber surround to reduce cone break-up and distortion. These two 3.5" cone woofers provide rich, detailed midrange/midbass.

Precision Vojtko Crossover: To seamlessly blend the audio output from the Folded Motion tweeter and two 3.5" woofers, the 6i loudspeaker features a precision Vojtko crossover (4000Hz) utilizing custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series, and low DF electrolytic capacitors in parallel.

Curved High-Gloss Black Sealed Cabinet: Complementing the 6i loudspeaker's sonic accuracy is its elegant, yet understated styling. A high-gloss piano black finish, along with MartinLogan's signature perforated grille, give the 6i speaker an elegant and timeless look that will blend into almost any decor. The speaker cabinet also features rounded edges and gently tapered top/sides. The cabinet is an acoustic suspension design (sealed) for tighter, accurate midbass. The grille is magnetic and detachable.

Spring-Post Connectors: The MartinLogan 6i speaker features two spring-post connectors to attach your speaker wire. The spring-posts will accept bare wire (16- to 10-gauge), pin-connectors, and banana plugs (single only).

Applications: The MartinLogan 6i LCR loudspeaker can be used as a center-channel speaker or paired with another 6i speaker for a stereo or home theater front/rear application.

Mounting Options: The MartinLogan 6i speaker can simply be placed horizontally on a flat-surface; such as a table-top, stand, shelf, or cabinet. Four rubber self-adhesive feet are included to prevent slippage and reduce vibration. Because of its curved cabinet, this speaker cannot be placed vertically on a flat-surface. The included wall-mount brackets and hardware let you mount this LCR speaker on the wall, horizontally or vertically.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A


Looking for more? Check out the next model in this lineup.

MartinLogan Motion 8i (GB)

MartinLogan Motion® 8i


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$359.99 After $40.00 Sale

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Enjoy fuller sound with deeper bass and more power handling

The MartinLogan Motion® 8i offers these features:

1" x 1.4" Folded Motion tweeter

two 4" poly cone woofers with rigid dust caps

frequency response: 70-23,000 Hz

recommended amplifier power: 20-180 watts

impedance: 4 ohms