JBL Professional GSB12 2-way Outdoor In-ground Woofer - 450 W RMS - Tan - 1800 W (PMPO) - 12" - 39 Hz to 107 Hz - 6 Ohm The 2-way Outdoor speakers with the 1800 W power handling work terrifically The 6 Ohm impedance keeps the speakers at optimal sound brilliance levels Hear every detail crisp and clear with a frequency response of 39 Hz-107 Hz Experience body-shaking levels without any room-vibrating reverb or excessive heat output with 450 W RMS power 12" woofer driver size allows better stereo imaging with maximum sound feasibility Delivers reliable sound with 107 Hz maximum frequency response 86 dB sensitivity for efficient conversion of power into sound to produce adequate audio output IP66 Ingress Protection (IP) rating for efficient imperviousness of intrusion from dust and water In-ground form factor allows hassle-free and easy usage with increased efficiency Dust Resistant durability for better reliance and usability