MartinLogan Motion® 8

Center channel/multi-purpose home theater speaker

Item #: 839MO8B

In Stock

3 Reviews | Ask Questions

Your price: $399.99 each Earn up to 400 Rewards points

Add to Cart Free Shipping Lifetime Tech Support

+ Add to wishlist + Email me alerts for this product

View all associated offers

Dynamic home theater performance from MartinLogan

MartinLogan Motion 2 tweeter detail

The Motion 8 uses MartinLogan's acclaimed Folded Motion tweeter for smooth, effortless highs.

MartinLogan's elegant Motion 8 was designed for maximum performance and flexibility. This versatile speaker comes with brackets for easy wall-mounting. And because you can orient it horizontally or vertically, it makes a great center channel companion to other wall-mountable members of the Motion series, such as the Motion 2 or Motion 4. You can also use a trio of these speakers across your front left, center, and right channels for a seamless front soundstage.

Folded Motion™ tweeter for detailed sound

The distinctive sound of the Motion series starts with MartinLogan's Folded Motion tweeter. Rather than a dome or cone driver, this tweeter uses a pleated diaphragm that works like an accordion by "squeezing" air to create sound. It requires about 90% less excursion than a typical 1" dome tweeter, resulting in quicker response time and much lower distortion. The tweeter's controlled sound dispersion creates a focused soundstage with a real sense of presence. Music and movie soundtracks sound amazingly detailed, but smooth and effortless, without a trace of harshness.

A stylish, curved cabinet

MartinLogan Motion 8 in living room environment

The Motion 8, shown here as a wall-mounted center channel speaker

The tweeter is flanked by two 4" doped paper cone woofers that supply accurate mids and bass. All three drivers are mounted in an eye-catching curved cabinet that's finished in classic high-gloss piano black. The Motion 8's subtle, modern lines complement just about any décor.

Be sure you get enough bass

For even better bass — and especially for high-impact home theater — we recommend a powered subwoofer, like one of MartinLogan's excellent models.

Product Highlights:

  • versatile home theater speaker can be positioned horizontally or vertically
  • includes brackets for wall mounting
  • elegantly curved cabinet with high-gloss piano black finish
  • 1" x 1.4" Folded Motion tweeter
  • two 4" doped paper cone woofers with rigid dust caps
  • frequency response 70-25,000 Hz (±3dB)
  • handles up to 180 watts
  • sensitivity: 89 dB
  • impedance: 4 ohms
  • acoustic suspension (sealed) cabinet
  • perforated metal grille
  • custom-designed push-style binding posts accept pins, banana connectors, or bare wire
  • 22-1/4"W x 5-5/8"H x 5-1/4"D
  • weight: 8.5 lbs.
  • warranty: 5 years (with product registration)
  • Our 60-day money-back guarantee

Your home theater's most important speaker

The center channel speaker is the workhorse in a home theater system. It has to reproduce clear dialogue and special effects that keep your eyes and ears glued to the movie action. A high-quality center speaker is a great investment for any surround sound setup. Try to choose one that's as closely matched as possible to your front right and left speakers, so that as sound moves across the front stage, it stays seamlessly realistic.

Hands-on research

What's in the box?

Download owner's manual

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

Features and Specs

Enclosure Acoustic Suspension
Tweeter Folded Motion Transducer
Midrange size (inches) N/A
Woofer size (inches) 4
Connector Type Spring post
Power Range 20-180
Sensitivity 89 dB
Impedance (Ohms) 4
Frequency Response 70-25k Hz
Height (inches) 5-5/8
Width (inches) 22-1/4
Depth (inches) 5-1/4
Weight 8.5 lbs
Parts Warranty 5 Yrs w/ Registration
Labor Warranty 5 Yrs w/ Registration

Product Research

Features

2-Way LCR Speaker: The MartinLogan Motion 8 LCR loudspeaker employs a 2-way speaker design and features MartinLogan's advanced resolution Folded Motion tweeter and two 4" paper cone woofers. Pairing these three drivers together creates a dynamic full-range sound with an expansive soundstage.

  • Folded Motion Tweeter: MartinLogan's Folded Motion tweeter helps give the Motion 8 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 1" x 1.4" 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 Paper Cone Woofers: The Folded Motion tweeter is flanked by two 4" paper 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 4" paper 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 Motion 8 loudspeaker features a precision Vojtko crossover (3000Hz) 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 Motion 8 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 Motion 8 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.

Spring-Post Connectors: The MartinLogan Motion 8 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). The rubber caps on the spring-post connectors must be removed to use banana plugs.

Applications: The MartinLogan Motion 8 LCR loudspeaker can be used as a center-channel speaker or paired with another Motion 8 speaker for a stereo or home theater front/rear application.

Mounting Options: The MartinLogan Motion 8 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.

Note: The MartinLogan logo badge on the Motion 8's grille can be re-position based on how you have the speaker mounted.

Break-in Period: Allow approximately 72 hours of break-in at 90 dB (moderate listening levels) before any critical listening.

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 open the box, verify contents, 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.

MartinLogan Motion® 8 Reviews

Average Customer Review:

3 reviews
Review this product
Great Gear Giveaway

Submit a review and then enter to win a $500 rewards card

(0)
(0)
(0)
(0)
(0)

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
  Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left

Concert in the family room

Written By Calvin, Delray Beach, Fl on Friday, April 18, 2014

Crutchfield Customer Review (What's this?)

Very nice, it can hold its own. Dialogue is strong and clear

Pros: Crystal clear

Cons: Non so far

motion 8

Written By mebe, Everett, WA on Sunday, September 29, 2013

Crutchfield Customer Review (What's this?)

This speaker "woke" up my listening, I had not realized how muddy my Polk speakers were. Dialogue Was clear and crisp, midrange was excellent. Now I am replacing all my speakers, albeit slowly, with the ML motion series. They are made in Kansas, support is excellent and product is superb.

Pros: Great sound and looks

Cons: Pricey?

MartinLogan Motion® 8

Written By Anonymous, Portland,or on Thursday, September 05, 2013

Crutchfield Customer Review (What's this?)

Nice center, a bit small as a match to the motion 40's

Get everything you’ll need to enjoy your new MartinLogan Motion® 8

You'll need speaker wire to connect your speakers to your amp or receiver. No wire is included with this speaker.
Cut your speaker wire to the exact length you need.
Add connectors to your bulk speaker wire for a neater, easier, and more reliable installation.
A powered sub delivers high-energy bass to bring your music and movie soundtracks to life.
The center channel reproduces most movie dialogue and more than 50% of the soundtrack information. You'll want a speaker that is voice-matched to your main speakers.
Bookshelf speakers make great surround speakers. Finish off your system with a pair of voice-matched speakers for the rear of your home theater.
Original Monster Cable

Original Monster Cable

With gold pin connectors (15-foot pair)

Item #: 119OMC1515

(37)

$39.99
Add to Cart
Monster Cable SuperFlat™ Mini

Monster Cable SuperFlat™ Mini

Decor-friendly speaker cable with gold pin connectors (50-foot spool)

Item #: 119SFLM50

(25)

$34.95
Add to Cart
AudioQuest Type 4

AudioQuest Type 4

Speaker cables with pre-attached banana connectors (10-foot pair)

Item #: 703T410BFS

(22)

$248.99
Add to Cart
AudioQuest Type 4

AudioQuest Type 4

Single center speaker cable with pre-attached banana connectors (10 feet)

Item #: 703T410CTR

(8)

$124.49
Add to Cart
AudioQuest X2 Speaker Cable

AudioQuest X2 Speaker Cable

14-gauge cable, connectors optional (30 feet, Gray)

Item #: 703X230G

(27)

$58.99
Add to Cart
AudioQuest G2 Speaker Cable

AudioQuest G2 Speaker Cable

16-gauge cable, connectors optional (30 feet, Gray)

Item #: 703G230G

(19)

$38.99
Add to Cart
Monster XPHP™ MKII

Monster XPHP™ MKII

Speaker cable with clear jacket (100 feet)

Item #: 119XPHP100

(9)

$99.95
Add to Cart
Monster XP®

Monster XP®

Speaker cable with clear jacket, connectors optional (100 feet)

Item #: 119XPMS1H

(51)

$64.95
Add to Cart
Monster XP® Navajo White MkII

Monster XP® Navajo White MkII

Speaker cable (50 feet)

Item #: 119XPNWS50

(2)

$39.95
Add to Cart
Monster crimp-on mini bananas

Monster crimp-on mini bananas

1 pair, 16-gauge

Item #: 119MTMB

(5)

Monster crimp-on banana connectors

Monster crimp-on banana connectors

1 pair, 12-gauge

Item #: 119MTRB

(4)

Monster Twist-on Mini Banana Connectors

Monster Twist-on Mini Banana Connectors

2 pair, 16-gauge

Item #: 119MTTMH2

(11)

$11.95
Add to Cart
Monster Twist-on Banana Connectors

Monster Twist-on Banana Connectors

2 pair, 12-gauge

Item #: 119MTTRH2

(4)

$15.95
Add to Cart
Monster Cable Twist-on Angled Gold Pins

Monster Cable Twist-on Angled Gold Pins

4 pair, 12-gauge

Item #: 119AGPTRH2

(9)

$13.95
Add to Cart
Monster XP Mini Twist-on Pin Connectors

Monster XP Mini Twist-on Pin Connectors

4 pair, 16-gauge (4 pair)

Item #: 119GPTMH

(14)

$11.95
Add to Cart
MartinLogan Dynamo™ 700W

MartinLogan Dynamo™ 700W

Wireless powered subwoofer

Item #: 839DY700B

(6)

$699.99
Add to Cart
MartinLogan Dynamo™ 500

MartinLogan Dynamo™ 500

Powered subwoofer

Item #: 839DY500B

$499.99
Add to Cart
MartinLogan Dynamo™ 1000W

MartinLogan Dynamo™ 1000W

Wireless powered subwoofer

Item #: 839DY1KB

(2)

$999.99
Add to Cart
MartinLogan Motion® 6

MartinLogan Motion® 6

Center channel/multi-purpose home theater speaker

Item #: 839MO6B

(3)

$299.99
Add to Cart
MartinLogan Motion® 4

MartinLogan Motion® 4

Bookshelf speaker with wall mount bracket

Item #: 839MO4GB

(3)

$249.99
Add to Cart
MartinLogan Motion® 2

MartinLogan Motion® 2

Bookshelf speaker with wall mount bracket

Item #: 839MO2GB

$199.99
Add to Cart

Questions & Answers Ask the community. Share your knowledge.