SPECIFICATIONS: * 5.25 Inch 2-Way Speaker System. * Full Chrome Plated Basket & Cone. * Injection Molded Cone. * Butyl Rubber Surround. * 1.5 Inch High Efficiency Neodymium Tweeter. * 8 oz. Magnet. * Frequency Response : 60Hz. - 21,000 Hz. * 100 Watts Maximum System Music Power. * Impedance : 4 Ohm Sensitivity : 90 dB [1W/1m].