4" Inches Max Power: 360W(per pair) Rated power: 70W(per pair) Impedance: 4 Frequency Response: 100Hz - 20KHz Sensitivity (1W/1m): 89 dB Magnet: 5.3oz Strontium Voice Coil: 1 Aluminium Woofer: Graphite Injection PP Midrange and Tweeter: 1 Mylar Dome Tweeter and 2x Piezo Tweeter 4 ...4" Inches Max Power: 360W(per pair) Rated power: 70W(per pair) Impedance: 4 Frequency Response: 100Hz - 20KHz Sensitivity (1W/1m): 89 dB Magnet: 5.3oz Strontium Voice Coil: 1 Aluminium Woofer: Graphite Injection PP Midrange and Tweeter: 1 Mylar Dome Tweeter and 2x Piezo Tweeter 4" 4-WAY SPEAKER. Max Power: 360W (per pair) Rated power: 70W(per pair) Impedance: 4 Frequency Response: 100Hz - 20KHz Sensitivity (1W/1m): 89 dB Magnet: 5.3oz Strontium Voice Coil: 1 Aluminium Woofer: Graphite Injection PP Midrange and Tweeter: 1 Mylar Dome Tweeter and 2x Piezo Tweeter