Features 5 x 7" Three-Way Speaker Injection PP Cone Piezo Tweeter Mylar Dome Tweeter Rubber Surround Ferrite Oxide Magnet Specifications Nominal Impedance: 4 Ω Speaker Sensitivity: 90 dB Frequency Response: 45Hz - 25KHz Nominal Music Power: 50 Watts Maximum Music Power: 160 Watts Description