We first saw the Yamaha YSP-4000 Sound Projector in use at CES 2007. At that time we were quite impressed that a single unit could generate a 5.1 sound field. For those of you who are not familiar with what the Yamaha Sound Projector, it is single unit resembling an oversized center channel that decodes surround sound and generates multi-channel experience by bouncing sound waves off the walls in your room. The advantages are obvious...

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