Boston Acoustics

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M250B 2.5-way floorstanding: 1-in EWB dome tweeter, 1 x 5.25-in Mid/Woofer, 1 x 5.25-in Woofer. (Price shown for each)

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Overview

Experience rich sound while enjoying music, movies, and more with the M250 Floorstanding Loudspeaker from Boston Acoustics. This 2.5-way speaker combines a 1-inch Extended Wide Bandwidth dome tweeter with a 5.25-inch mid/woofer and a 5.25-inch woofer for smooth, natural sound and dynamic bass. The M250's Lo-Q cabinet is built to reduce vibrations and eliminate unwanted resonances, while internal braces provide additional damping.

2.5-Way Floor-Standing: 1-Inch EWB Dome Tweeter, 1 by 5.25-Inch Mid/Woofer, 1 by 5.25-Inch Woofer Product Shot
The Lo-Q cabinet reduces vibrations and eliminates unwanted resonances.View larger.
2.5-Way Floor-Standing: 1-Inch EWB Dome Tweeter, 1 by 5.25-Inch Mid/Woofer, 1 by 5.25-Inch Woofer Product Shot
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.
View larger.
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M250 Floorstanding Loudspeaker
At a Glance
  • 1-inch EWB dome tweeter for greater clarity and less distortion
  • 5 ¼ -inch polypropylene mid/low driver
  • 5 ¼ -inch polypropylene low-frequency driver
  • Lo-Q cabinet reduces vibrations and eliminates unwanted resonances
  • Internal braces positioned to maximize speaker's strength
  • Five-year limited warranty
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EWB Tweeter

Clear, Natural Sound for Music, Movies, and More
The M250 Floorstanding Loudspeaker is equipped with Boston's signature 1-inch 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.


The speaker also contains a 5.25-inch polypropylene mid/woofer driver and a 5.25-inch polypropylene cone woofer for extended bass response. Aluminum shorting rings help produce clearer sound.


MDF Piece Of Wood

Lo-Q Construction to Limit Vibrations
The M250 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 M250 to create a larger, more vivid soundstage.


The cabinet also contains heavy-duty absorptive fill and internal braces that have been carefully positioned to maximize the speaker's strength and optimize sound. The M250's black gloss finish and curved side panels with faux leather wrap can complement any decor.


Product and Warranty Information
This product measures 38.44 by 9.62 by 9.81 inches (H x W x D) and weighs 35.3 pounds. It is recommended for use with a 50- to 250-watt amplifier.


The M250 Floorstanding Loudspeaker is backed by a five-year limited warranty, subject to the full warranty terms and conditions.


What's in the Box
M250 Floorstanding Loudspeaker, speaker spikes, and owner's manual.

Specifications

Nominal Impedance
Compatible with 8 ohm outputs
Crossover Frequency
450Hz, 2900Hz
Woofers
1 x 5.25" Mid/woofer, 1 x 5.25" woofer
High-Frequency Driver
1"(2.5cm) EWB dome
Recommended Amplifier Power
50 - 250 watts
Sensitivity (1 watt (2.83v) at 1m)
88 dB
Frequency Response (+- 3dB)
62Hz - 30KHz

Reviews

Lawrence Devoe , Blu-rayDefinition.com
"The M Series has been the beneficiary of BA’s long legacy and bears testimony to the fact that good things can come in small packages. After living with these little fellows for nearly two months, and enduring the tedious but essential break-in process, I was rewarded with surprisingly big sound belying their modest size."

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