SPECIFICATION:MODEL:TRF VL SW105D2Size: 10nchCone: Competition Grade paperSurround material: Foam Voice coil dimension : 2.5inchVoice coil layer: 4layerDust cap : PVC Nominal impedance:dual 2ohmVoice coil wire: COOPERSpider dimension : 2.5''ID / 8''ODSpider material : NOMEXSpider layers :1pcs x 3layersRMS Power: 500wrmsMAX Watt: 1000wmaxSensitivity: 86.6dBResonance frequency(f0): 35.4HzMechanical Q factor(Qms): 5.24Electrical Q factor(Qes): 0.45Total Q factor:(Qts): 0.41Xmax: 11mmForce factor: 14N/AMagnet Weight: 100 OzNet weight: 6.5kgBasket: IRONMagnet: FerriteMagnet dimension:Φ160*20mm X 2PCS1=Outer Dimension: 265mm - 10.43"2=Mounting Depth: 137mm - 5.39"3=Magnet Dimension: 162mm - 6.38"4=Mounting Hole Dimension: 233mm -9.17"