The OMNITRONIC CS-8 is a passive 8-inch full-range flush-mount ceiling speaker for 100 V indoor public address systems. It provides 10 W RMS rated power, with selectable 2.5 W, 5 W, and 10 W RMS taps via a spring-terminal switch. The speaker has a 50–18,000 Hz frequency range, 92 dB sensitivity, an ABS housing, and a black scratchproof and shockproof finish. It is intended for speech and background music in restaurants, hotels, sports facilities, and other indoor installations.