Acoustic Audio CS-IW820 300 Watt In Wall 2-Way Speaker (White) 300 Watts Max and 150 Watts RMS Power Handling 8" Poly Woofer and Soft Dome Tweeter Frequency Response: 40Hz - 20 kHz (+/- 3dB) Efficiency/Sensitivity: 94dB at 1 watt 1 meter Crossover Frequency: 3500 Hz Cut Out Size: 8.66" x 12.76" Overall Size: 10.04" x 14.17" Applications include Home Entertainment, In-Wall/Ceiling Speaker, Home Audio Surround Sound, Sunrooms, Atriums, Home Theaters or Cinema Rooms, Patios, Pool Decks, Bathrooms or Kitchens, Offices or Commercial Use