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MartinLogan Motion® 15

Bookshelf speaker (Black Cherrywood)

Item # 839MO15BC

The operative word for MartinLogan's Motion 15 is "beauty." This mini-monitor has it in spades, from its...

The operative word for MartinLogan's Motion 15 is "beauty." This mini-monitor has it in spades, from its...

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Item # 839MO15BC

In stock

$424.99 -$125.00 Special purchase

$299.99 each

Other options

About the MartinLogan Motion® 15

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.
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.

Got wire?

Most speakers don't include any. Read our article about choosing and installing speaker wire.
Shop our selection of speaker wire.


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
  • MFR # Mo15-BCH

What's in the box:

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

Customer reviews

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MartinLogan Motion® 15 reviews

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Crutchfield response

<< >>

More details on the MartinLogan Motion® 15

Stacey B.

Features & specs

Enclosure Bass Reflex
Finish Wood veneer
Color Cherry (black)
Video Shielded No
Tweeter Type Folding Motion
Tweeter Size (inches) 1.0 x 1.4
Midrange Size (inches) N/A
Woofer Size (inches) 5.25
Woofer Composition Aluminum
Woofer Surround Rubber
Power Range 20-200
Sensitivity 92 dB
Impedance (Ohms) 5
Frequency Response 60-25k Hz
Connector Type Post
Bi-amp Inputs No
Height (inches) 11-7/16
Width (inches) 6-13/16
Depth (inches) 9-1/2
Weight (pounds) 12
Mounting Bracket Included No
Recommended Stand Height (inches) 24-30
Parts Warranty 5 Yrs w/ Registration
Labor Warranty 5 Yrs w/ Registration
The MartinLogan Motion® 15 replaces these items:

Product Research


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.

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Customer Q&A

Crutchfield asked: Why did you buy this?
Beauty on the inside and outside!!! Yonas, Mpls. [ Y  Aug 27, 2019 ]
The sound from Martin Logan is amazing [ mike  Oct 15, 2018 ]
Amazing bookshelf speakers that exceed at high-end audio reproduction; demo "Por Ti Volare" on the Martin Logan Motion 15 and it will blow away comparable speakers like the B&W 605s. However, you'll want to eventually complement the Motion 15s with a sealed subwoofer to get the low-end. [ Josh  Mar 15, 2016 ]
It's been a dream to own Martinlogan. Now I will. Thanks Crutchfield. I've been a customer for nearly 30 years. Love the support I get from your team! [ Robert  May 16, 2020 ]
Magazine review. [ Garnot  May 08, 2017 ]
replacement speakers. so far very satisfied. classical music listener. [ MICHAEL S  Dec 21, 2015 ]
Unbelievable sound for such a small box. A pair of these fills a large great room easily. Powered by Onkyo TX-8160. [ Patrick  Jun 22, 2017 ]

2 questions already asked

Looking for recommendations for 24 inch speaker stands for these please? Plan on using then as rear surrounds .
[ Bud  May 12, 2020 ]
2 answers
Hey Bud, No idea how you found out I got this speaker but I returned it as it did not suit my needs so I have no answer for you. Crutchfield staff can be more of a help. Great speaker btw. Cheers
[ Ronen  May 12, 2020 ]
Amazing speakers. I've had B&W and also Klipsch Reference and these blow them away. Perfect as rears on stands. Mine are not well placed and still sound amazing.
[ Fredrick  May 12, 2020 ]
Can this be wall mounted?
[ Kristen  Sep 24, 2017 ]
1 answer
They are pretty heavy. They do have a hole in the back that is threaded for a bolt. I would say about 1/4" probably for a specific stand. I would feel safer with them attached secerly to a shelve as you would need a double threaded bolt into a stud to hold them. They are beautiful and with only two, OMG the sound is way more then I expected. I will be getting more.
[ Shannon  Sep 24, 2017 ]

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Looking for more?

Check out the next model in this lineup.

MartinLogan Motion® 35XT
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Gloss Black Cherrywood
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59 reviews

$624.99 -$225.00 Special purchase

$399.99 each
Add to cart

Get more bass and bigger sound

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