The Blaupunkt Pure 66.2 is a 2-way coaxial woofer with a diameter of 165 mm (6.6 inches). It has a rated power of 40 watts RMS and can handle peak power of up to 280 watts. The sensitivity is 90 dB at 2.83 V/m, and the frequency response ranges from 90 Hz to 22,000 Hz. The speaker has an impedance of 4 ohms and features an injected polypropylene (PP) cone. The design is finished in black.