4) Kicker 43DSC6504 6.5" 240 Watt 2-Way 4-Ohm Car Audio Coaxial Speakers DSC6504 (2) Pairs of Kicker 43DSC6504 DSC650 6.5" 240 Watt 2-Way Car Stereo Speakers 4-Ohm. 240 Watts Peak Power 60 Watts RMS Power. Polypropylene midwoofer Acoustic-foam surround. 1/2" Polyethylene-Naphthalate Dome Tweeter 4 ohms impedance. Frequency Response: 40-20,000 Hz Top-mount Depth: 1-11/16". Mounting Diameter: 4 13/16", Sensitivity: 90dB