* Exciter: Voice Coil Diameter 25 mm x 4 * Nominal Impedance: 8 ohm * Frequency Response: 60 - 15,000 Hz * Output sound level: 90 dB * Permissible input: 240W * Dimensions: 26.57in (675mm) x 19.69in (500mm) x 2.17in (55mm) The S-FL1 flat panel speaker offers easy installation, & provides consistently high-quality sound throughout the entire listening area. It is ideal for mobile DJs & bands playing at small clubs, music bars, parties & other open-air events. The speakers also provide a good solution for press conferences, graduations, picnics & company meetings where a variety of people will make presentations to a large audience. Sensitivity 103 ohms (on) /105 ohms (off)