6-1/2" component speaker system carbon/paper composite woofer with butyl rubber surround steel woofer basket 1-1/8" Acuflex coated silk dome tweeter external crossover with 3 tweeter level settings handles up to 100 watts RMS (300 watts peak power) frequency response: 50-22,000 Hz sensitivity: 87 dB at 2.83 V woofer mounting depth: 11/16" woofer grilles included