ASQ1028 Features: * Ceiling speaker * 8 Ohms * Similar to Atlas C Series Specifications: * 10W, 8", 10 oz. Ceramic magnet * Sensitivity: 97 dB * Frequency: 50 Hz to 18 kHz * Power taps: .25, .5, 1, 2 and 5W Dimensions: * Overall Dimensions: 2.88" H x 8.13" W x 8.13" D.