Earthquake Sound Marine MC5 5" Matched Component Speaker Set Component marine speaker set includes paired 5" woofers, 20mm tweeters, and crossovers Dual layer poly-injected rubber-coated cones Treated 20mm balanced PEI dome tweeters with neodymium magnets 18dB-per-octave crossover networks with crossover frequency of 4kHz Perfect fit in factory cutouts and tight spaces