SKP powered speaker with 3 channels, microphone and line input. Includes MP3 with independent controls, a USB/SD input and Bluetooth. It also serves as ideal monitoring for shows and events. A passive speaker can be connected. Bluetooth USB/SD port MP3 with independent controls LCD screen XLR/TRS/RCA input 15" woofer 2.5" titanium driver Maximum power: 1000W Frequency response 40Hz - 18KHz Woofer diameter 38.1cm (15) Magnet: 50 Oz / Coil 2.5 Kapton VC Sensitivity: 96 dB (@1W/1m) Maximum sound pressure level 126dB High frequency driver 44 mm (1.75) Titanium Diaphragm with hyperbolic horn Horn 90º x 50º Power supply 110V - 220V - 60/50 Hz