1.dual 10" line array subwoofer, subwoofer, woofer speaker 2.for church,concert,conference,disco 3. 2x10",400w 4. OEM/ODM Model: LA-210S line array subwoofer, subwoofer, woofer speaker Frequency response (-3dB)52Hz~300 KHzLF driver2x10” (10in) Φ65mm voice-coilNominal Impedance4ohmsSystem sensitivity (1w@1m)98dB SPLMaximum SPL128dBPower handling600WPeak power1200WDimensions (W x D x H)540x478x320 ...