Type: 15" subwoofer ferrite magnet steel basket driverImpedance: 8 OhmProgram power: 800WSensitivity: 98 dB / SPLFrequency range: 50 - 2600 HzVoice coil diameter: 3"Magnet material: FerriteCoil material: CopperFormer material: Fiber GlassVoice coil inductance: 1.00 mH