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Boston Acoustics M25

Bookshelf speaker

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  • Boston Acoustics M25

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  • Boston Acoustics M25

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  • Boston Acoustics M25

    Extended Wide Bandwidth (EWB) dome tweeter

  • Boston Acoustics M25

    M25 in a livingroom setting

  • Boston Acoustics M25

    Pictured without grille

 

Our take on the Boston Acoustics M25

by Dave Bar
Boston Acoustics

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.

Designed for your ears and eyes

The sleek, solidly built M25 from Boston Acoustics delivers exceptionally accurate and natural sound from a conveniently sized bookshelf design. It takes advantage of the latest advancements in Boston's speaker technology to bring your home entertainment to life — whether you're using a pair for stereo music, or creating a complete surround sound system. And the M25 looks every bit as good as it sounds, sporting a deep, black piano lacquer finish with luxurious leather-feel trim.

Advanced drivers for detailed, dynamic sound

Boston's Extended Wide Bandwidth dome tweeter lets the M25 really sing with silky, transparent highs. Unlike most tweeters, this one has a dimple in the middle that stabilizes the linear motion of the tweeter for significantly lower distortion, improved dispersion for a deep, expansive soundstage, and greater clarity over a broad range of frequencies. The M25 also delivers dynamic mids and bass thanks to a 5-1/4" polypropylene woofer and an acoustically tuned port.

Better cabinet construction improves performance

Cabinet vibration, or resonance, is the enemy of clear sound. It adds distortion and coloration to music and vocals. Boston's M Series speakers fight vibration with LoQ™ cabinet construction. By using two sheets of MDF (medium density fiberboard) with a special damping adhesive layer between them, Boston created an enclosure that provides the acoustic deadening of much thicker materials without the drawbacks of added weight and increased size. The result is a relatively compact, lightweight speaker that has a very low resonance — or in speaker-speak, a low “Q.”

In addition to the Lo-Q cabinet material, Boston also used a scanning laser vibrometer to critically position the M Series cabinets' internal braces where they provided the most benefit, and added heavy-duty absorptive cabinet fill to eliminate internal standing waves. These advanced cabinet building techniques and materials result in speakers with impressive transparency and a large, detailed soundstage.

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Highlights:

  • 1" Extended Wide Bandwidth soft dome tweeter for clarity and low distortion
  • 5-1/4" polypropylene cone woofer supplies dynamic bass
  • bass-reflex (ported) cabinet
  • Boston Lo-Q™ cabinet construction reduces vibration and eliminates unwanted resonance
  • high-quality crossover network circuit boards and components for outstanding phase and timing accuracy
  • laser-based vibration measurements ensure optimized placement of internal bracing and driver mounting points to minimize cabinet resonance
  • high-gloss black piano lacquer finish with leatherette covered baffle
  • frequency response: 62-30,000 Hz (±3dB)
  • sensitivity: 86 dB
  • impedance: compatible with 8-ohm outputs
  • recommended amplifier power: 50-200 watts
  • 5-way binding post speaker terminals
  • 6-7/8"W x 12-3/8"H x 10-1/8"D
  • weight: 14.7 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Enclosure
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Bass Reflex
Video Shielded
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No
Tweeter Type
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Dome
Tweeter Size (inches)
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1
Midrange Size (inches)
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N/A
Woofer Size (inches)
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5.25
Woofer Composition
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Polypropylene
Woofer Surround
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Rubber
Power Range
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50-200
Sensitivity
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86 dB
Impedance (Ohms)
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8
Frequency Response
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62-30,000 Hz
Connector Type
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Post
Bi-amp Inputs
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No
Height (inches)
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12-3/8
Width (inches)
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6-7/8
Depth (inches)
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10-1/8
Weight (pounds)
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14.7
Mounting Bracket Included
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No
Recommended Stand Height (inches)
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24-31
Parts Warranty
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5 Years
Labor Warranty
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5 Years
Product Research
What's in the box?

Download owner's manual

  • Bookshelf loudspeaker
  • Detachable grille (installed)
  • 4 Rubber feet
  • Owner's Manual (En/Fr/Sp)
  • Note about cabinet

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

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.

Features

Two-Way Speaker: The Boston Acoustics M25 bookshelf loudspeaker features a 1" Extended Wide Bandwidth dome tweeter and a 5.25" cone woofer for accurate, natural sound and dynamic bass. The 1" EWB dome tweeter provides greater clarity and less distortion, while the 5.25" cone woofer delivers dynamic bass response.

  • 1" Extended Wide Bandwidth Dome Tweeter: The M25 Bookshelf Loudspeaker is equipped with Boston's signature 1" Extended Wide Bandwidth (EWB) dome tweeter, which is designed to cover a broad range of frequencies, reduce distortion, and improve clarity in the high registers. Unlike most tweeters, the EWB has a small dimple in the middle and a large radiating surface that extends from the center to the outside perimeter of the diaphragm. This design enables the tweeter to track subtle treble details and reproduce the highest frequencies with ease.
  • 5.25" Polypropylene Cone Woofer: The M25 also contains a 5.25" polypropylene cone woofer driver with aluminum shorting ring for dynamic bass and clear, distortion-free sound.

High Quality Crossover Networks: Very high quality crossover networks featuring low loss film capacitors and low distortion laminated silicon steel core inductors are utilized for greater clarity and minimal coloration.

Lo-Q Cabinet Construction: The M25's Lo-Q cabinet is built to reduce vibrations and eliminate unwanted resonances. The M25 has a cabinet made of Lo-Q, a material consisting of two pieces of medium-density fiberboard joined together with a thick layer of damping adhesive in the middle. This material significantly reduces cabinet vibrations to virtually eliminate unwanted resonances allowing the M25 to create a larger, more vivid soundstage. The cabinet also contains heavy-duty absorptive fill and internal braces which have been strategically positioned to maximize the speaker's strength and optimize sound.

Gloss Black Finish w/ Leatherette Wrap: The M25's gloss black finish and curved side panels with faux leather wrap can complement almost any decor.

Rear-Firing Port: The Boston Acoustics M25 employs a rear-firing port for higher efficiency and greater bass response. Because of the rear-firing port, the speaker should be placed at least 3" from the wall.

Binding Post Speaker Terminals: The Boston Acoustics M25 bookshelf loudspeaker is fitted with a set of binding post speaker terminals that will accept bare wire (up to 10AWG), banana plugs (single only), spade-connectors, and pin-connectors.

Mounting Options: The M25's compact size allows you to place the speaker on a bookshelf, wall shelf, table, or speaker stand. Self-adhesive rubber feet are included to minimize the vibration transferred from the speaker to the stand, shelf, or cabinet. This will also help to protect the finish of the loudspeaker and the mounting location. The rubber feet add 0.25" to the height of the speaker.

 
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Boston Acoustics M25 Reviews

Average Customer Review:

4 people say:

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Filter by rating:
1 out of 5

disappointing

Written By NF, Wisconsin on Tuesday, July 01, 2014
Crutchfield Customer Review (What's this?)
 
They sound cheap and I regret buying them.
Was this review helpful?    Yes | No
 
5 out of 5

Great sound!!

Written By MZH, Maryland on Tuesday, December 24, 2013
Crutchfield Customer Review (What's this?)
 
great soundstage for the size and they pack a powerful punch. they look great also, the leatherette and black go with anything.
Pros:
perfect.
Cons:
none.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Not surprised

Written By Terry P, TUCSON , AZ on Tuesday, November 19, 2013
Crutchfield Customer Review (What's this?)
 
I have been a long time user of Boston Acoustics speakers, I currently own the VS336 towers VS325 center and auto boston speakers. The only surprise I got with these speakers was the price. these speakers are really a deal for the pair. it is almost insane. I own a few pair of bookshelf speakers including B&G Z1 , NHT CLASSIC 3, CAMBRIDGE AUDIO S30 , SUNFIRE CRM2, MUSIC HALL MARIMBA to name a few and the M25 is better than all of them in overall balance and sound. For the price of a pair of these I feel I really got the deal of the century but even at the regular for a pair I would not be complaining.
Pros:
Overall balance and sound
Cons:
I feel like I took advantage of Crutchfielf for the deal I got.
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
4 out of 5

Mr

Written By QN, San Jose. CA on Saturday, October 19, 2013
Crutchfield Customer Review (What's this?)
 
sound great
Pros:
nice cabinet
Cons:
NA
Was this review helpful?    Yes | No
 

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For a more in-depth review and enhanced detailed information on the Boston Acoustics M25, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_065M25/Boston-Acoustics-M25.html ).