6-1/2? Premium Series 2-way Component System Power Handling: 70-140 watts 1.6? (40mm) PTF 40 tweeter Two-piece inverted titanium dome tweeter WideSphere?-Technology Neodymium ring magnet Numerous flush, surface, and coaxial mounting accessories PVF series midbass drivers Two-piece carbon fiber reinforced composite chassis Light-weight polypropylene cones Edge wound 1? (25mm) voice coilsSilver lacquered specially designed metal motor cover for improved cooling Gold-plated spade and screw terminals Separate coaxial mounting option Premium performance crossover network Unique FleXX Mount system for multiple mounting options Three-level rotary tweeter attenuator Premium grade components Bi-wire and bi-amp capable Frequency Response: 38 Hz ? 32 kHz Sensitivity: 87 dB