Boston Acoustics Pro60 Se Professional Special Edition 6.5 Inch Component Speakers Component speaker system includes two woofers, two tweeters, two external crossovers 6-3/4" copolymer woofer with rubber surround and cast aluminum basket 1" Type-M1 anodized alloy dome tweeter with axis-, flush-, and surface-mount options Dockable crossover with bi-wire and bi-amp options Power range: 2-125 watts RMS (250 watts peak power)