Yamaha YSP-1 Owner's Manual page 8

It is generally accepted that in order to fully enjoy the benefits of surround sound at home, you must endure the agony of
wiring and installing a great number of speakers in the hope that your listening room will give you the same kind of
surround sound experience as your local movie theater.
YAMAHA's YSP-I Digital Sound Projector challenges this preconception that complicated speaker set up and
troublesome wiring go hand-in-hand with the enjoyment of multi-channel surround sound.
Sound Beam Diagram
Listening
Position
= .....
i
l
l
Imaginary front speaker position
' ' Imaginary surround speaker position
2