Peak Input Power 110WMaximum Input Power 40WRated Input Power 28WWoofer Cone material Injection P.P.ConeSpeaker Basket SteelSpeaker Surround ClothSensitivity 90dB/W/mFrequency Response 45Hz ~ 20000HzSpeaker Impedance 4ΩDimensions (W x H x D) 133 x 133 x 62.3mmMounting Depth 41.9mmMouting Hole Diameter Ø 93mmSpeaker Weight with Grille (pc.) 345grSpeaker Weight w/o Grille (pc.) 302grGross Weight 900gmWeight of Magnet 100gm