Power Acoustik KP-462N 4" x 6" KP Series 2-Way Full Range Speakers, 180W: * 2-way car speaker (pair) * Polypropylene injection cone * Butyl rubber surround * Stamped steel frame * Copper voice coil on aluminum former * 3-ohm impedance * 1.125" polymide tweeter * Configuration: 4"x 6" 2-way * Frequency Response: 100-20kHz * System Impedance: 3 ohm * MAX Power Handling: 180W * RMS Power Handling: 90W * System Efficiency: 87dB * Midbass Voice Coil: 1" aluminum * Midbass Magnet: 5.3oz * Midbass Cone Material: Polypropylene * Grill: No * Tweeter Size/Type: 1" Mylar * Top Mount Depth: 1.75" * Bottom Mount Depth: 2" * Cutout Dimension: 3.5" x 5.625"