Boston Acoustics ASW 250

A 250-watt peak powered subwoofer with a 10-inch down-firing driver and proprietary BassTrac technology

Overview

The Boston Acoustics ASW 250 is a powered subwoofer from the company's A Series, designed for integration with compatible speakers in home audio systems. It features a 10-inch Deep Channel woofer mounted down-firing and is driven by a 100-watt RMS (250-watt peak) amplifier. The system emphasizes clean, controlled bass output through a combination of mechanical and electronic design techniques, including resonance control and overload protection circuitry.

Specifications

Frequency Range	28Hz – 150Hz, ±3dB
Amplifier Power	100 watts RMS (250 watts Peak)
Bass Driver	10” (254mm) Deep Channel woofer
Dimensions (H x W x D)	14-1/16" x 14-11/16" x 16-3/8" (356 x 372 x 415mm)
Weight	32 lbs (14.51kg)
Features	Adjustable low pass filter
Woofer cone material	ceramic and glass fiber polymer
Cabinet design	tuned resonant port design
Cabinet construction	vertical and horizontal internal bracing
Finish	high-contrast finish cabinets with scratch-resistant panels, magnetic grilles

Design

The ASW 250 incorporates Boston Acoustics' proprietary BassTrac technology, a circuit designed to maximize bass output while preventing amplifier and driver overload. It uses Deep Channel Design (DCD) magnet structures and was engineered using Laser Vibrometer Scanning and Finite Element Analysis (FEA) to detect and eliminate unwanted resonances. The cabinet eliminates hardware on the front baffle and features rounded front edges, contributing to a clean aesthetic and improved structural integrity. Internal bracing is applied both vertically and horizontally, and the design follows the company's "Play Smart" approach to optimize performance and reliability.