MB QUART RVF 213 5-1/4 inch 2-way Coaxial / Component Speakers System (HANDMADE IN GERMANY) 0.75" Titanium tweeter 5.25" Polypropylene woofer Crossover Power Handling: 50 - 110 W Impedance: 4 ohms Sensitivity: 2,6 W (90 dB/1m)