We are manufacturer, professional loudspeakers. 1, 1000W 2,102dB 3,Wooden materials. 4,2* ... /bass2*18''Frequency response30Hz--150HzRated power1000WSensitivity102dBPeak impedance4Ω We are manufacturer, professional loudspeakers.1, 1000w2, 102dB3, Wooden materials.4, 2*18'' woofer ...