Infinity REF-5022CFX 5″ Reference Series Speakers

5-1/4″ 2-way speakers (pair)
Plus One+ polypropylene woofer cone with hi-roll rubber surround
1/2″ balanced textile dome tweeter
True Four Ohm Impedance technology: speaker’s 3-ohm impedance combines with speaker wire impedance for a 4-ohm load
compatible with virtually all factory or aftermarket car stereos
power range: 5-45 watts RMS (135 watts peak power)
frequency response: 67-21,000 Hz