HERTZ DIECE DCX 460.3 6"x4" Coaxial car speakers 1 PAIR (Please note these speakers do NOT come with grilles)   SPECIFICATION 2 Way Coaxial Woofer: 4" x 6" Inches Tweeter: 15mm (0.6 inches) 40 Watts  RMS 80 Watts Peak Power 4  Ohm Impedance 65Hz - 21k Hz  Frequency Response 92 dB SPL Sensitivity   This 2-way coax speaker is designed to satisfy specific installation and listening needs. The DCX 460.3 features a neodymium magnet, PEI dome tweeter, built-in crossover, TPU (Thermoplastic polyurethane) surround and a copper mobile voice coil wound on conex former. An extremely light, yet stiff structure ensures linear frequency response and a high sensitivity level. 1. Large motor assembly for mobile voice coil control. 2. Pure copper voice coil, wound on conex former, for maximum lightness. 3. Water-repellent treated paper cone. 4. TPU surround, for wide excursion and resonance damping. 5. Neodymium tweeter with PEI dome, for compactness and energy at high frequencies. 6. DIN size basket protected by abrasion-proof dust paint. 7. Tin-plated, high current terminals. 8. Silver-plated lead wires for maximum reliability and conductivity. 9. Epoxy glue for basket and motor system provides perfect coupling. 10. Low carbon content plates for maximum magnetic permeability and high heat dissipation.