Skar Audio RPX46 150 Watt 2-Way 4"x6" Coaxial Speaker System, Pair Peak power handling : 150 watts per pair (75 watts each) Microfiber paper cone & butyl rubber surround 20Mm soft dome silk tweeter Frequency response : 40 - 25,000 Hz +/- 3 dB Sensitivity : 91 dB 2-Way 4x6&#034; Coaxial Speakers Impedance: 4 Ohm RMS Power: 45 Watts (Pair) Max Power: 150 Watts (Pair) 3/4&#034; (20mm) High Grade Aluminum Dome Tweeter Microfiber Paper Mid-Woofer Cone 1&#034; KSV Voice Coil Frequency Response: 40 Hz - 20 kHz Sensitivity: 91 dB Powerful 10 Oz Ferrite Magnet