Alpine Spr-60 6.5-Inch 2 Way Pair of Car Speakers 6-1/2" Type-R Coaxial 2-way Car Speakers. New style grille offers full woofer protection along with a unique new design Multi-Layer hybrid fiber cone delivers a really strong bass response. High Amplitude Multi Roll (HAMR) Santoprene rubber surround provides consistent, extended cone movement 1" Swiveling silk ring-dome tweeter produces smooth highs. High-Density polymer frames Peak Power Handling Per Pair: 600 watts. Peak Power Handling Each: 300 watts. RMS Power Handling Per Pair: 200 watts. RMS Power Handling Each: 100 watts Frequency Response: 65-29,000 Hz. Sensitivity: 88 dB. Top Mount depth: 2-3/8"