Specifications Driver Enclosure Type Mineral-filled polypropylene cabinet Driver Complement • (1) 3.5″ (8.89 cm) d (Round) Dynamic Balance driver with extended motor structure, composite cone and butyl rubber surround – Midrange • (1) 0.75″ (1.91 cm) d (Round) Dynamic Balance polyurethane tweeter with neodymium magnet – Tweeter Total Frequency Response 100 Hz → 22,000 Hz Nominal Impedance 8 ohms Sensitivity (1 watt @ 1 meter) 83 dB Lower and Upper -3dB Limits 115 Hz → 20,000 Hz Recommended Amplifier Power Per Channel 10 watts → 100 watts Mounting Type Wall bracket Mounting Type Stake with security plate Waterproof Rating IPX66 Total Pieces 1 Package Contents: Polk Audio Outdoor Speaker Atrium SAT300, 1Pc; Ground Stake; x8 Ground stake; Security plate; Pendant-mount cap; Rubber bumper; x2 Wire nuts; x1 Eyebolt; x2 Lock-washers; Two 1″ Pan-head screw; One 3/4″ Pan-head screws; 2 Crimp-on spade terminals (0.250″/ 0.187″); Manual.