Kicker KS-Series 51KSS6704 6.75" Component Speakers and 51KSC6504 6.5" Coaxial Speakers - High Power Handling, Polypropylene Woofer, Tough Rubber Surrounds Enhance your audio experience with our premium Kicker speaker package. This package includes 51KSS6704 6.75" component speakers and 51KSC6504 6.5" coaxial speakers, delivering unparalleled sound quality. Immerse yourself in exceptional sound quality and enjoy superior audio performance with this top-notch system. Upgrade your car's sound system and indulge in an immersive listening experience. Kicker 51KSS6704 Component Speakers: Condition: New Woofer: 6-3/4 inches (165 mm) Tweeter: 1 inch (25 mm) Dome Material: Silk Rated Impedance: 4 Ω Recommended Amplifier Power: 15-125 Watts RMS Sensitivity: 91 dB Frequency Response: 35-21K Hz Woofer Mounting Hole Diameter: 5-9/16 inches (141 mm) Woofer Bottom Mount Depth: 1-13/16 inches (46 mm) Flush Mount Tweeter Hole Diameter: 1-3/4 inches (45 mm) Flush Mount Tweeter Depth: 11/16 inches (17 mm) High Pass: 12 dB at 4,000 Hz, Low Pass: None High-Frequency Output Attenuation: 0 dB, 4.5 dB, 9 dB Grilles included Kicker 51KSC6504 Coaxial Speakers: Condition: New Speaker Design: 2-Way Woofer: 6-1/2 inches (160 mm) Tweeter: 3/4 inch (20 mm), Neodymium magnet Rated Impedance: 4 Ω Recommended Amplifier Power: 15-100 Watts RMS Sensitivity: 90 dB Frequency Response: 43 Hz - 21k Hz Mounting Hole Diameter: 4-13/16 inches (123 mm) Top Mount Depth: 1-13/16 inches (46 mm) Bottom Mount Depth: 2-3/16 inches (54 mm) Tweeter Protrusion: 5/16 inch (8 mm) Grilles included