MartinLogan Motion® 15

Bookshelf speaker (Black Cherrywood)

Item #: 839MO15BC

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MartinLogan Motion 15

The Motion 15 uses a 5-1/4" aluminum cone mid/woofer and MartinLogan's innovative Folded Motion tweeter.

A mini-monitor for music lovers

The operative word for MartinLogan's Motion 15 is "beauty." This mini-monitor has it in spades, from its furniture-grade fit and finish to its stunningly natural sound. This member of  MartinLogan's award-winning Motion® series features advanced speaker technologies like the Folded Motion™ tweeter. Though small in size, the Motion 15 delivers huge musical enjoyment.

Folded Motion tweeter for detailed sound

MartinLogan's innovative Folded Motion 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 sounds amazingly detailed, but smooth and effortless, without a trace of harshness.

Bass that keeps pace

The Motion 15 uses a 5-1/4" aluminum cone woofer to supply fast, clean midrange and lower-mid frequencies that blend in seamlessly with the Folded Motion tweeter. A low-turbulence rear-firing port extends bass performance, but keeps it tight and tuneful.

Deceptively good sound

When MartinLogan visited Crutchfield for a day of training, they had a mix of their electrostatic and dynamic models lined up in the front of the room. They started off our session with a few minutes of an atmospheric live track. The sound was strikingly open and immediate — we thought we were listening to one of ML's electrostatic panels. Imagine our surprise when it turned out to be the little Motion 15s. Sometimes it's fun to be fooled.

Product Highlights:

  • 1" x 1.4" Folded Motion™ tweeter for exceptional musical detail with low distortion
  • 5-1/4" aluminum-cone woofer with cast basket
  • bass-reflex (ported) enclosure
  • frequency response: 60-25,000 Hz (±3dB)
  • sensitivity: 92 dB
  • impedance: 5 ohms
  • recommended amplifier power: 20-200 watts
  • 5-way binding post speaker terminals
  • perforated steel grille attaches magnetically to cabinet
  • 6-13/16"W x 11-7/16"H x 9-1/2"D
  • weight: 12 lbs.
  • warranty: 5 years (with product registration)
  • Our 60-day money-back guarantee

Why choose bookshelf speakers?

Bookshelf speakers may be small in size, but they can deliver surprisingly big sound. Some ultra-compact models even fit on a desktop. Most are right at home in tight spaces like shelves, so they're usually good choices for your home theater's rear channels. For the best performance, try placing bookshelf speakers on solid speaker stands to help the sound really "open up." If you want full bass impact, add a powered subwoofer and enjoy punchy sound that's as deeply satisfying as that of floor-standing speakers.

Hands-on research

What's in the box?

Download owner's manual

  • Bookshelf loudspeaker
  • Magentic grille
  • 4 Rubber bumpers
  • User's Manual (En/Fr)
  • Product Registration Card

Product Research

Features

2-Way Bookshelf Loudspeaker: The MartinLogan Motion 15 bookshelf loudspeaker employs a 2-way speaker design and features MartinLogan's advanced resolution Folded Motion tweeter and a single 5.5" aluminum cone midbass woofer. Pairing these two drivers together creates a dynamic full-range sound with an expansive soundstage.

  • Folded Motion Tweeter: MartinLogan's Folded Motion tweeter helps give the Motion 15 bookshelf 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.
  • Aluminum Cone Woofer w/ Bass Port: The MartinLogan Motion 15 bookshelf loudspeaker features a high-excursion 5.5" aluminum cone woofer with a cast basket housed in a non-resonant asymmetrical chamber with a rear-firing bass port. The aluminum cone woofer uses a rigid structured dust cap to reduce cone break-up and distortion. Pairing the 5.5" woofer with a rear-firing bass port provides higher output and audibly richer, deeper bass performance.

Precision Crossover: To seamlessly blend the audio output from the high frequency driver (tweeter) and the midbass driver (woofer), the Motion 15 loudspeaker features a precision 2,700Hz crossover utilizing custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series, and low DF electrolytic capacitors in parallel.

High-Gloss Cabinet: Complementing the Motion 15 loudspeaker's sonic accuracy is its elegant, yet understated styling. A high-gloss, piano black, white or black cherrywood finish, along with MartinLogan's signature perforated grille, give the Motion 15 speaker an elegant and timeless look that will blend into almost any decor. The speaker cabinet also features rounded edges and a gently tapered top.

Binding Posts: MartinLogan's proprietary tool-less binding posts simplify cable connection and management. The binding posts will accept bare wire (16- to 10-gauge), pin-connectors, spade-connectors, and banana plugs (single only).

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

Mounting Options: The bookshelf loudspeaker comes with 4 rubber self-adhesive feet to help secure them in place on a flat-surface, prevent slippage, and reduce vibration.  The optional PinPoint heavy duty side-grip wall-mounting bracket (121AM40B, sold separately) can be used to wall mount the speakers.

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® 15 Reviews

Average Customer Review:

3 reviews
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Best speakers I have owned

Written By Scott A, Utica,IL on Monday, August 04, 2014

Crutchfield Customer Review (What's this?)

I hear things on my music collection that I have never heard before. I could not be happier with my purchase. Hunter recommended these speakers and I could not be more satisfied.

Pros: Positive remarks all the way around to the looks of the speakers to the sound of them.

Cons: None

luv them

Written By mike, hampden ma on Friday, April 11, 2014

Crutchfield Customer Review (What's this?)

small speakers in size but not in sound quality

Pros: small dimension

Cons: none

Wow

Written By Rich, NJ on Wednesday, March 26, 2014

These speakers are simply amazing. Bravo Martin Logan.

Pros: They are stunning to your ears and your eyes.

Cons: None

Get everything you’ll need to enjoy your new MartinLogan Motion® 15

Add connectors to your bulk speaker wire for a neater, easier, and more reliable installation.
Get floor stands to keep your speakers attractively and safely at the right level.
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.
Complete your home theater speaker system with voice-matched surround 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

(36)

$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
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AudioQuest Type 4

AudioQuest Type 4

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

Item #: 703T410BFS

(22)

$248.99
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AudioQuest X2 Speaker Cable

AudioQuest X2 Speaker Cable

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

Item #: 703X230G

(27)

$58.99
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AudioQuest G2 Speaker Cable

AudioQuest G2 Speaker Cable

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

Item #: 703G230G

(19)

$38.99
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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
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Monster XP® Navajo White MkII

Monster XP® Navajo White MkII

Speaker cable (50 feet)

Item #: 119XPNWS50

(2)

$39.95
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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
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Monster Twist-on Banana Connectors

Monster Twist-on Banana Connectors

2 pair, 12-gauge

Item #: 119MTTRH2

(4)

$15.95
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Monster Cable Twist-on Angled Gold Pins

Monster Cable Twist-on Angled Gold Pins

4 pair, 12-gauge

Item #: 119AGPTRH2

(9)

$13.95
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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
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Sanus BF31B Speaker Stands

Sanus BF31B Speaker Stands

Basic Foundations® — 31"

Item #: 051BF31B

(50)

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Bell'O SP-300

Bell'O SP-300

30" speaker stands

Item #: 494SP300

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Sanus NF30 Speaker Stands

Sanus NF30 Speaker Stands

Natural Foundations Series IV — 30" (Black lacquer)

Item #: 051NF30B

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Pinpoint AM-41

Pinpoint AM-41

Side-clamping speaker wall mounts

Item #: 121AM41B

(2)

$89.99
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MartinLogan Dynamo™ 700W

MartinLogan Dynamo™ 700W

Wireless powered subwoofer

Item #: 839DY700B

(6)

$699.99
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MartinLogan Dynamo™ 500

MartinLogan Dynamo™ 500

Powered subwoofer

Item #: 839DY500B

$499.99
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MartinLogan Dynamo™ 1000W

MartinLogan Dynamo™ 1000W

Wireless powered subwoofer

Item #: 839DY1KB

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$999.99
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MartinLogan Motion® 8

MartinLogan Motion® 8

Center channel/multi-purpose home theater speaker

Item #: 839MO8B

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$399.99
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MartinLogan Motion® 6

MartinLogan Motion® 6

Center channel/multi-purpose home theater speaker

Item #: 839MO6B

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$299.99
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MartinLogan Motion® 30

MartinLogan Motion® 30

Center channel speaker (Gloss Black)

Item #: 839MO30GB

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$699.99
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MartinLogan Motion FX

MartinLogan Motion FX

Surround speaker (White)

Item #: 839MOFXW

$399.99
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MartinLogan Motion® 2

MartinLogan Motion® 2

Bookshelf speaker with wall mount bracket

Item #: 839MO2GB

$199.99
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MartinLogan Motion® SLM

MartinLogan Motion® SLM

Multi-purpose home theater speaker

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MartinLogan Motion® 4

MartinLogan Motion® 4

Bookshelf speaker with wall mount bracket

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IsoAcoustics ISO-L8R155 Monitor Stands

IsoAcoustics ISO-L8R155 Monitor Stands

Supports medium speakers

Item #: 892L8R155

(1)

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Questions & Answers Ask the community. Share your knowledge.

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

MartinLogan Motion 35XT BC

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The MartinLogan Motion® 35XT offers these features:

a 6-1/2" woofer for deeper, more powerful bass

MartinLogan's best Folded Motion XT tweeter for more expansive highs

bi-wire/bi-amp inputs

50-25,000 Hz frequency response