250 mm (10 inch) subwoofer in powder coated metal basket with loadable 64 mm aluminium dual voice coil, pressed and stiffened paper cone with long excursion surround, 2 x 2 ohms impedance, 500 W RMS, 1000 W music power handling, large core hole for optimum ventilation, strong ferrite magnet with silicone coating/protection, 278 x 135 mm (DxH), 84 dB characteristic sound pressure level, 6.0 kg.