Specifications Melior Two Frequency Response: 50 Hz - 20 KHz (+/- 3dB) Sensitivity: 84 dB (2.83 V at 1 meter) Nominal Impedance: 4 ohms resistive Maximum Amplifier Power: 150 Watts/channel Minimum Amplifier Power: 40 watts/channel Type of Speaker: Point Source Planar Frame: MDF. Finish: Mat Black Dimensions: 38"; 3", 19" Weight: 38 lb.