JBL Stadium GTO600c Specifications: Component speaker system includes 2 woofers, 2 tweeters, and 2 external crossovers 6-1/2" Plus One+ glass-fibre woofer cone with hi-roll rubber surround Edge-driven PEI polymer dome tweeter 2.5-ohm impedance Handles up to 100 watts RMS (300 watts peak power) Frequency response: 45-25,000 Hz Sensitivity: 93 dB at 2.83 volts Woofer top-mount depth: 2-1/16" Grilles included