Expert Series 6-1/2" 3-way component speaker system flax and glass fiber 6-1/2" woofer and 3" midrange with butyl rubber surrounds aluminum frame basket for woofer and midrange 2" inverted dome tweeter 3-way external crossover with 2-position tweeter level and 2-position midrange control 4-ohm impedance power range: 6-80 watts RMS (160 watts peak)