Description DRIVER Size (in.) 0.87 Throat Diameter (in.) 0.87 Colour Black Standard Impedance (Ohm) 8 Ohm Power RMS (Watts) 50 Power Program (Watts) 75 Sensitivity 1w/1m (dB) 109 Frequency Range (Hz) 200-7000 Magnet Material Ferrite Voice Coil Material Copper wire Former Material Kapton Voice Coil Diameter (in.) 2.04 Terminals Type Gold Plated Push Diaphragm Material Phenolic resin Mount Type Screw-On Net Weight (kg) 2.3 Gross Weight (kg) 2.45 Pieces per carton 1 Volume (cuft) 0.083 Dimensions (cm) 13,0x14,0x13,0