Peak Input Power 140WMaximum Input Power 56WRated Input Power 28WWoofer Cone material Injection P.P.ConeSpeaker Basket SteelSpeaker Surround ClothSensitivity 91dB/W/mFrequency Response 40Hz ~ 20000HzSpeaker Impedance 4ΩDimensions (W x H x D) 158 x 158 x 67.7mmMounting Depth 44.6mmMouting Hole Diameter Ø 112mmSpeaker Weight with Grille (pc.) 443gmSpeaker Weight w/o Grille (pc.) 376gmGross Weight 1100gmWeight of Magnet 125gm