Product highlights: 5-1/4" 2-way car speakers Plus One+ glass-fiber woofer cone with hi-roll rubber surround edge-driven, aluminum dome tweeter UniPivot angled tweeter design 3-ohm impedance handles up to 60 watts RMS (180 watts peak power) frequency response: 55-40,000 Hz sensitivity: 93 dB at 2.83 volts grilles not included