3-way excellence These Hertz Cento Series CX 690 6"x9" 3-way car speakers employ a PEI dome tweeter and supertweeter designed to deliver superior dispersion. The semi-pressed paper and mica powder woofer cone upholds your music's lower frequencies with accuracy and impact. Superior damping is also key to the sound of these speakers — minimized resonance reduces distortion for Hertz's famous truer-to-life sound. These are a great choice for the new enthusiast who's ready to get serious about sound in their vehicle. The Hertz philosophy Hertz believes that a good speaker should enhance the emotional power of the music you love. That's a high bar, but with their commitment to using premium components and boundary-pushing design, they're more than up to challenge. A community of music lovers, Hertz is committed to optimizing your car's sound system for total audio enjoyment. Product highlights: 3-way car speakers (pair) 6"x9" semi-pressed paper woofer with mica powder coating 1-5/8" PEI (polyetherimide) dome tweeter and 13/16" PEI supertweeter handles up to 100 watts RMS (300 watts peak power) frequency range: 40-23,000 Hz sensitivity: 93.5 dB top-mount depth: 3-1/8" impedance: 4 ohms grilles included warranty: 2 years 60-day returns MFR # CX 690 Item # 301CX690 What's in the box: Hertz CX 690 owner's manual Two 3-way Speakers 2 Grilles 2 Grille mounting rings Grille putty Eight 3/4" Screws 8 Speed clips Owner's manual (English/ Spanish/ French/ German/ Italian/ Portuguese/ 28 Others) Template on box Features & specs General Speaker Size 6X9 Design 3-way Tweeter Design 40mm Dome Impedance (Ohms) 4 Tweeter Composition PEI Woofer Composition Semi-Pressed Paper reinforced Woofer Surround Rubber Parts Warranty 2 Years Labor Warranty 2 Years Specifications Sensitivity (1W at 1 meter) 94.5 Sensitivity at 2.83 volts N/A Frequency Response 40 - 23k Hz Minimum RMS Wattage --- Maximum RMS Wattage 100 Peak Power Handling (Watts) 300 Top-mount Depth (Inches) 3 1/8 Bottom-mount Depth (Inches) N/A Cutout Diameter or Length (inches) 0 Mounting Height (Inches) 0.633 Frame Width 6.425 Frame Length 9.363 Product Research Features Klippel Verified: The Klippel distortion analyzer, a device that uses a laser and computer software to do large-scale analysis of drivers in motion, helps Hertz optimize the speaker's motor structure, voice coil alignment, and suspension to yield the best possible performance.