Speaker Size 13 cm Type 3-Way Coaxial System Max Power 300 Watt Continuous Power Output 50 W Frequency response 44 Hz – 52 kHz Sensitivity 89 dB Impedance 4 Ω Woofer material IMPP™ Composite Cone Voice Coil type Copper Voice Coil bobbin type GLASS IMIDE Cut-out Hole 121 mm Tweeter Type Piezo Type Speaker Grill Included