Nominal Overall Diameter: 12"Nominal Voice Coil Diameter: 2"Magnet Weight: 3.12 lb.Overall Weight: 9.6 lb.Flux Density: 1.20 TNominal Impedance: 8 ohmsRated Power: 70WMusical Power: 140WSensitivity @1W, 1m: 99 dBMagnet: FerriteVoice Coil Winding: AluminumVoice Coil Former: KaptonCone: PaperSurround: Integrated PaperDust Dome: Non-Treated ClothBasket: Pressed Sheet SteelVoice Coil DC Resistance: 6.33 ohmsResonance Frequency: 95HzMechanical Q Factor: 14.77Electrical Q Factor: 0.70Total Q Factor: 0