Abstract: A cinema sound system for upperforated screens includes for each sterophonic channel a floor positioned direct radiator bass speaker unit radiating into quarter space and an upper frequency speaker unit mounted above the screen. Each upper frequency speaker unit includes a middle frequency driver mounted in a sealed rear enclosure which is attached to the throat of a middle frequency horn. A constant directivity high frequency horn with a high frequency driver attached to a rear end is mounted coaxially in the middle frequency horn. Sharp cutoff active crossover filters divide the input signal into low, middle, and high frequency band signals which are separately power amplified. The middle frequency horn is adapted to function as a direct radiator at a lower end of the middle band and as a sectoral horn above an unloading frequency of the middle frequency horn.

Abstract: A cinema sound system for unperforated screens includes for each stereophonic channel a floor positioned direct radiator bass speaker unit radiating into quarter space and an upper frequency speaker unit mounted above the screen. Each upper frequency speaker unit includes a middle frequency driver mounted in a sealed rear enclosure which is attached to the throat of a middle frequency horn. A constant directivity high frequency horn with a high frequency driver attached to a rear end is mounted coaxially in the middle frequency horn. Sharp cutoff active crossover filters divide the input signal into low, middle, and high frequency band signals which are separately power amplified. The middle frequency horn is adapted to function as a direct radiator at a lower end of the middle band and as a sectoral horn above an unloading frequency of the middle frequency horn.

Abstract: A combination cup holder and armrest is provided for attachment to a chair arm. Typically, the chair arm is shared by adjacent theater or stadium chairs, or the like. The cup holder is integral with the armrest and extends beyond an outer end of the chair arm. The cup holder includes a receptacle, which defines two coaxial bores having different diameters, with a ring step therebetween. The bores are sized to receive a plurality of different sized cups in a stable manner. The inner walls of the receptacle, which define the coaxial bores, are slanted toward a center of the bores. The angle of slant generally conforms to an angle of slant associated with the outer surface of a subject cup, whereby surface contact is obtained between the cup and the receptacle.