ManualFEATURES- 3 INCH EDGEWOUND CCA VOICE COIL- 107.5 dB/SPL SENSITIVITY- 220 W PROGRAM POWER HANDLING- FEM OPTIMIZED MOTOR, PHASEPLUG AND DIAPHRAGM- 500 - 18000 Hz FREQUENCY RANGE- TITANIUM DIAPHRAGM- PATENTED IIS INTEGRAL INPUT SURFACE PHASEPLUG..