Home Theater Sound System
Projected with a small, portable movie projector onto a portable screen, often without sound, this system became the first practical home theaetr. The first known home cinema system was installed as a sales tool at Kirshmans furniture store in Metairie, Louisiana in 1974. They built a special sound room which incorproated the earliest quadraphoinc audio systems and modified Sony trinitron telveisions for projceting the image.
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