TRF SPL SW1220 D0.5

MODEL: TRF SPL SW1220 D0.5Size:12 inchCone: competition grade paperSurround material: FoamVoice coil: 3.0inchVoice coile layer: 8layerNominal impedance: dual 0.5ohmVoice coil wire:aluminiumRMS Power: 2000-2800wrmsMAX Watt:4000-5600wmaxSensitivity: 88.6dBResonance frequency(f0): 36.7HzMechanical Q factor (Qms): 6.08Mechanical Q factor(Qes): 0.55Total Q factor:(Qts): 0.50Xmax: 21mmForce factor: 22.9N/AMagnet Weight: 300Oz1=Outer Dimension: 320mm - 12.6"2=Mounting Depth: 218mm - 8.58"3=Magnet Dimension: 228mm - 8.98"4=Mounting Hole Dimension: 280mm - 11.02"