Hertz MPX 165.3 PRO 6-&Acirc;&frac12;" 2-way Car Speakers Power Handling: 200W Peak | Power Handling: 100W RMS | Impedance: 4-Ohm Frequency response: Hz 45  21,5k | Sensitivity: 92 dB/SPL | Woofer size: 6.5 Tweeter size: 1 | Woofer Voice Coil: 1.42 | Tweeter voice coil: 0.8 Woofer magnet: High density flux ferrite | Tweeter magnet: Neodymium Woofer cone: Pressed-pulp cone with cotton fibers | Tweeter dome: Tetolon