Hertz Ml 700.3-70 Mm Mid-Range Speaker Size mm (in.) 70 (3) Power Handling - Peak W 100 (Hi-Pass filtered @ 250Hz - 12dB Oct.) Impedance  4 | Frequency response Hz 200 - 20k | Sensitivity dB SPL 90 Voice coil  mm (in.) 20 (0.8) | Magnet Neodymium Cone/Dome Pressed-pulp cone with cotton fibres Comes with Grills