Model:MW-0801 ?Power Rating: 40 Watts R.M.S / 80 Watts Peak ?Sensitivity: 89?dB (1W / 1M) ?Impedance:4Ω ?Fo:50?0% Hz ?Frequency Response: Fo-6KHz ?Voice Coil: 1?AL ?Magnet: 20 oz, 90 x 50 x 20 mm ?Frame: Steel, Black color ?Cone: Paper ?Edge: Foam