passive speaker 2012Red-hot best seller New item-SN-T922 1.big power and good sound 2.12'' passive ... dividerpassive speaker 2012Red-hot best seller New item-SN-T922 2.0 professional passive speakerstage speaker loudspeaker item No.: ... SN-T922 power150WDriver unitdouble 12"inchFrequency Respond40Hz-18KHzSensitivity90dB±3dBImpedance4ΩG.W( ...