Yamaha unveils 4 new home theater systems this year. These systems include a component-grade receiver, speaker system, and subwoofer. The 4 new Yamaha Home Theater systems along with their major features are the following: Key features of the Yamaha YHT-391BL: 5.1 home theater system Includes component-grade 100-watt AV receiver (Yamaha HTR-6230BL) Four two-way satellite speakers, each with a ...