Product highlights: component speaker system includes two woofers, two tweeters, and two crossovers 6-1/2 #34; polypropylene Plus One woofer cone with rubber surround 3/4 #34; edge-driven silk dome tweeter handles up to 70 watts RMS (210 watts peak power) frequency response: 55-20,000 Hz impedance: 3 ohms sensitivity: 92 dB at 2.83 volts woofer top-mount depth: 2-1/16 #34; grilles included