Overview
250-Watt Peak 10-Inch Down-Firing Powered Subwoofer makes an ideal addition to home theater or music systems.

At a Glance:
- High-contrast finish with scratch-resistant high-gloss panels for a stylish design
- BassTrac technology enhances bass output while avoiding overload and distortion
- Advanced ceramic/glass fiber polymer woofer with Deep Channel Design (DCD) delivers more bass from less amplifier power
- Acoustically tuned ports with internal bracing for improved low-frequency response
- Adjustable low pass filter for a cleaner sound balance




Powered Subwoofer Delivers Resounding Bass
With the ASW 250 subwoofer, you can effortlessly reproduce the lowest of low frequencies on your favorite Blu-ray movies, video games, and music whether they are explosions, bass guitars, or drums. Pair with additional A Series speakers (sold separately) to create an immersive surround sound experience. Each speaker in the A Series incorporates innovative materials and fabrication methods for improved frequency response and enhanced stereo imaging.
Clean, Stylish Design
Offering luxurious quality, each speaker in the A Series is housed in high-contrast finish cabinets with scratch-resistant panels, textured tops, magnetic grilles, and rounded edges for a superior build. The A Series' sleek design looks great alongside any room's decor.
BassTrac Technology for Deep, Powerful Bass
Boston's dedicated subwoofers include BassTrac technology, a proprietary circuit that maximizes bass output while avoiding overload.
Woofer Design Reduces Distortion
Each A Series 10-inch woofer uses Deep Channel Design (DCD) magnet structures to deliver more bass from less amplifier power, resulting in a fuller, cleaner sound. The A Series woofers feature ceramic and glass fiber polymer cones that help to reduce distortion for improved clarity.
Adjustable Low Pass Filter for a Balanced Sound
The ASW 250's adjustable low pass filter lets you balance the bass load between the subwoofer and speakers, allowing the subwoofer to produce only the lowest tones.
Innovative Cabinet Shape Improves Stereo Imaging
All A Series cabinets use a tuned resonant port design to magnify the woofer's sound output for improved low-frequency response and stereo imaging. Vertical and horizontal internal bracing reduces unwanted resonances in the cabinet and drive units.
The Goal of the A Series
Boston's A Series speakers are ideal for either multichannel home theater or stereo-only music systems and may be used in any configuration for other listening applications.
Boston Acoustics creates all of its speakers following the Play Smart approach to product design--sensible, useful, smart design features combined with contemporary styling. To deliver the best performance possible in this price class, Boston's engineers brought together the best elements of traditional loudspeaker design, incorporating several new technologies into the A Series.
Boston's engineers utilized Laser Vibrometer Scanning and Finite Element Analysis (FEA) to identify unwanted resonances in the loudspeaker with the goal of eliminating them to greatly improve performance. The elimination of hardware on the cabinet's front baffle and rounded front edges further improve driver performance for improved stereo imaging.
The Boston Acoustics ASW 250 250-watt peak 10-inch down-firing powered subwoofer is backed by a five-year warranty, subject to the full warranty terms and conditions.
What's Included
One ASW 250 250-watt peak 10-inch down-firing powered subwoofer and instructions.