JBL 8320 Compact Cinema Surround Speaker for Digital Applications 50 Hz to 20 kHz Frequency Range High Power Handling Capability: 150 watts continuous pink noise High Sensitivity, 91 dB SPL, 1 W, 1 m (3.3 ft) Internal Thermomaster technology allows for unprecedented high frequency power in a compact molded enclosure. Special cabinet shape incorporates 20 angled front baffle