JBL GTO-509C GTO-509C 5.25" 2-Way 225W RMS Component Speaker Set component speaker system includes 2 woofers, 2 tweeters, and 2 external crossovers 5-1/4" carbon-injected Plus One woofer cone power range: 5-75 watts RMS (225 watts peak power) impedance: 3 ohms. frequency response: 67-21,000 Hz