JL Audio C1-525x 5.25" (130mm) 2-Way Coaxial Car Speakers

JL Audio C1-525x C1 Series 5-1/4" 2-way Coaxial Car Speakers C1 speakers deliver real substance and great audio performance in a format designed for easy fit behind factory grilles. Highlights 2-way 5-1/4" speakers (pair) handles up to 50 watts RMS (225 watts peak power) frequency response: 54-24,000 Hz sensitivity: 92 dB at 2.83 volts top-mount depth: 2-1/2" injection-molded mineral-filled polypropylene woofer cone with rubber surround 3/4" aluminum edge-driven dome tweeter grilles not included Specifications Continuous Power Handling (RMS) 50 W Recommended Amplifier Power (RMS) 10 - 75 W / Ch. System Efficiency 89.0 dB @ 1 W / 1 m System Nominal Impedance 4 Ω System Frequency Response 54 Hz - 24 KHz ± 3 dB   Frame Outer Diameter* (A) 5.83 in / 132 mm Grille Tray Outer Diameter (B) N/A Motor Outer Diameter (C) 2.76 in / 70 mm Frontal Coaxial Tweeter Protrusion** (D) 0.54 in / 14 mm Frontal Grille Protrusion (E) N/A Mounting Hole Diameter (F) 4.70 in /