An ideal combination of technology, performance and design, the Reference Series RPW-10 subwoofer brings a deep, tuneful bottom end to home theater and two-channel music systems.   As the most affordable subwoofer in the Reference Series line, the RPW-10 delivers room-shaking bass courtesy of a 10-inch fiber composite front-firing woofer and a 200-watt RMS amplifier.   Featuring traditional volume, crossover and phase controls, the RPW-10's front-firing slot port makes in...