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"Nominal Diameter: 12″ (310 mm)Nominal Impedance: 8 OhmsRated AES Power Handling (RMS):500 WattsProgram Power: 1000 WattsSensitivity 2.83V at 1m : 97.5 dBRecommended HiPass Crossover: 110 HzFrequency Range: 70-3,200 HzVoice Coil Diameter: 3″ (75 mm)Voice Coil Wire: AluminumVoice Coil Winding Depth: 19.0 mmFormer Material: Glass FiberMagnetic Gap Depth: 10.5 mmFrame Material: Die Cast AluminumFor high output speaker systems, PRV Audio 12MB1000FT midbass is an excellent option capable of amazing performance. More power handling and less distortion on midlow midbass frequencies is the key.Impressive driver with 97.5 dB efficiency and 500 watts power. It is ideally used in stage monitors, auditoriums, touring, and outdoor systems. The smooth response from 70 to 3,200 Hz is perfect for 2 or 3-way designs.A rigid cast aluminum frame with narrow spokes to minimize reflections back into the cone. In addition, the frame includes force cooling system openings which allow airflow to cool the voice coil. To drive the voice coil, a large ferrite magnet is used with a very precise machined top and bottom plate. The additional dual forced vent in the backplate for the coil allows this driver to handle up to 500 watts RMS without issue.Featuring a paper cone that has a special high strength paper pulp composition designed to achieve the best possible linearity within the middle frequency range and a special cone treatment specifically dedicated to improving the dampening properties of the moving assembly, thus considerably improving the smooth frequency response.The voice coil is wound on a 3″ glass fiber with aluminum wire keeping weight to a minimum for an incredibly quick transient response. Engineered with 19 mm of winding depth, this inside/outside voice coil provides excellent thermal and mechanical durability."