Size 25 cmImpedance 4 ΩFrequency response 20 - 31,000Sensitivity 92 dBMaximum power input 420 WNominal output power 80 WWoofer material Carbon Graphite Interlaced Aramid Fibre Cone with Foamed Rubber Coat Cloth EdgeMidrange size 57 mmTweeter size 18 mmPassive Crossover Network HPF; -6dB