Pioneer SHF31LR 2-Way Bookshelf Loudspeakers (Discontinued by Manufacturer) Maximum Input Power - 120 Watts / Sensitivity - 82dB (the sound pressure level produced by the speaker) / Frequency Response - 50Hz - 20, 000Hz/ Impedance - 8 Ohms 6-5/16-inch (16cm) Cone Woofer for Dynamic Sound Reproduction / 1-inch (2.5cm) High-Efficiency Semi-Dome Tweeter Magnetically shielded so the magnets will not damage your TV when positioned next to it Dimensions (WxHxD) - 7-11/16 x 11-15/16 x 7-13/16 inches (195 x 303 x 199mm) / Weight (each speaker) - 6 lbs 13 oz / 3.3 kg