TRF SW1245 D0.5

Cone: Competition Grade paper Surround material: Foam with FABRIC Voice coil made : MADE IN USA Voice coil dimension : 4.0inch Voice coil layer: 8 layers Dust cap: Carbon FROM MADE IN EUROPE Nominal impedance: dual 0.5ohm Voice coil wire: aluminum Spider dimension : 4''ID / 10''OD Spider material: NOMEX Spider layers: 2pcs x 4layers RMS Power: 4500wrms MAX Watt: 9000wmax Sensitivity: 86.7dB Resonance frequency (f0): 40.6- Hz Mechanical Q factor (Qms): 6.24 Electrical Q factor (Qes): 0.40 Total Q factor: (Qts): 0.38 Xmax: 27mm Force factor: N/A Magnet Weight: 400 Oz Net weight: 32kg Basket: Die cast Alumium Magnet: Ferrite Magnet dimension: Φ250*20mm X 3PCS 1=Outer Dimension: 311mm - 12.2" 2=Mounting Depth: 240mm - 9.45" 3=Magnet Dimension: 260mm - 10.2" 4=Mounting Hole Dimension: 283mm - 11.01"