Cinema Sound 3000 : 4000 : 5000 : High Powered Screen Arrays : ScreenArray Systems (2 way) : ScreenArray Systems (3 way) : Subwoofers 4000 Series : Surround Systems       4675C-4(8)LF Cinema Loudspeaker System   Spec Sheet The 4675C-4(8)LF provides powerful, smooth and accurate reproduction of motion picture soundtracks in medium and large cinemas. Features :   Specifications : Frequency Range: 34 Hz to 20 kHz Sensitivity: 100 dB (LF), 113 (HF) 1 watt, 1 meter (3.3 ft) Power Capacity: 1200 W (LF): 75 W (HF), AES pink noise Components: Dual 380 mm (15 in) low frequency loudspeakers 100 mm (4 in) compression driver 90° x 40° Constant-Coverage Bi-Radial® horns 4675C-ELF approved by Lucasfilm, Ltd. for THX® system installations Simple field assembly reduces labor costs   Low Frequency Driver   :   (2) 2226H High Frequency Driver   :   2446H High Frequency Horn   :   2360A Frequency Range   :   35 Hz - 20 kHz (-10 dB) Power Capacity   :   (LF) 1200 W, (HF) 75 W Sensitivity   :   (LF): 100 dB (1 W, 1 m) (HF): 113 dB (1 W, 1 m) Crossover Frequency   :   500 Hz - 630 Hz Beamwidth   :   90° horizontal, 40° vertical Nominal Impedance   :   (LF) 4(8) ohms, (HF) 8 ohms Dimensions (H x W x D)   :   1797 x 770 x 949 mm (70.75 x 30.3125 x 37.375 in) Net Weight   :   98 kg (215 lb)