The Pro/10 intended primarily for use as a subwoofer in superior quality music or home theater systems. This powered subwoofer incorporates a high current power amplifier, in order to chieve the highest possible level of low frequency performance. The amplifier and electronic-crossover are completely self-contained modules which are housed in the subwoofer. The Pro/10 incorporate the SAS proprietary exclusive subwoofer technology, by which the amplifier is specifically engineered in conjunction with the driver for optimum load matching and power transfer characteristics.