Product highlights: 6-1/2" 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 85 watts RMS (255 watts peak power) frequency response: 45-40,000 Hz sensitivity: 93 dB at 2.83 volts grilles not included