低音炮

　　SUB 250在独特的窄槽式倒相箱体里安装了8吋低音单元，采用了强劲的BASH放大器，提供250W峰值功率。以它的尺寸和价格而论，SUB 250有着出色的表现，能够重放低至30HZ的频率。

　　SUB 250有非常平坦的频率响应，与传统的低音反射式超低音相比，它能以一种非常有力的方式播放低频信号，频率响应一直延伸到150Hz。这点很重要，因为许多超低音炮的频率输出在100Hz左右陡降（有些型号更低），这样它们就很难与小音箱匹配。
技术
BASH Amplifier
　　This subwoofer features the highly efficient BASH® amplifier technology, which combines the musical quality of class A/B amplifiers with the efficiency of class D amplifiers. BASH® technology translates into more efficient, yet more powerful amplification without the heat associated with conventional amplifiers. 

　　This subwoofer also feature a convenient on/auto/off switch and built-in limiter, which means that sound reproduction will always be clean and as well defined as intended.
Level, Phase and Cut-off
　　Continuously variable level, phase and cut-off frequency controls make it easy to tune the subwoofer to integrate with virtually any speaker on the market, as well as allowing different placements and personal preferences
窄槽式倒相箱体
　　窄槽倒相式是这些低音炮构造中独特的部分。设计用来加强侧面，使得整个箱体异常坚固。它还允许用更大的导管面积实现更低的频率调谐，与传统的圆孔相比，既高效率又低失真。
Speaker Level In
　　This subwoofer features speaker-level inputs, which is vital if your amplifier/receiver lacks a subwoofer line output.
　　The subwoofers also have both left and right line-level inputs (for stereo sources) plus a "loop-through" capability to allow the signal to be routed through to a second subwoofer.