Loudspeaker type : Mid -Bass - Cone driver Category of diameter : 15 inch / 38 cm Magnet type : Ferrite Shape : Cylindrical External diametre : 393 mm Mounting diametre : 354 mm Basket front tickness : 16 mm Depth : 153 mm Znom8 ohm Zmin6.2ohm Frequency range40-2000Hz Power handling400W Max power800W Voice coil diametre3 inch