Model:MW-01012 ?Power Rating: 50 Watts R.M.S / 100Watts Peak ?Sensitivity: 89?dB (1W / 1M) ?Impedance:4Ω ?Fo:40?0% Hz ?Frequency Response: Fo-4KHz ?Voice Coil: 1.5?AL ?Magnet: 30 oz, 113 x 62 x 22 mm ?Frame: Steel, Black color ?Cone: Paper ?Edge: Foam