The Boschmann XW-532FR are 2-way coaxial full-range car speakers from the Premium Line Series. These 5.25-inch (130mm) units utilize a polypropylene injection molded woofer and neodymium dome high-definition drivers for the tweeter. They provide a 90W RMS continuous rating and 250W peak power, working best with amplifiers between 5 and 90 Watts RMS per channel. The frequency response spans 45Hz to 21,700Hz with a sensitivity of 89dB/w*m(SPL) and a nominal impedance of 4 Ohms. Each speaker weighs 470g and has a mounting depth of 45mm, a maximum outside diameter of 130mm, and mounting points of 135mm x 100mm. A 10mm clearance above the mounting surface is required, and the magnet diameter is 75mm. Gold-plated brass spade terminals are used for connectivity. The set comes with two speakers, covers, wire, and screws.