This loudspeaker with high-impact molded enclosure reproduces sound with unmatched clarity and power. Its high-temperature oversized Kapton voice coil and HeatScape motor structure allow effortless play of all types of movies and music. The FreeFlow flared port increases bass response without adding unwanted port noise. JBL"s custom-designed drivers allow the use of simple, Straight-Line Signal Path (SSP) crossover networks with high-quality electrical components that minimize processing that could degrade the signal. The WeatherPlas (polymer-coated cellulose fiber) cone woofer features traditional JBL engineering, the same technologies used in JBL"s Professional equipment that can be found in stadiums, music halls and movie theaters around the world.Specifications Description2-Way, 4-Inch, (100mm) Weather-Resistant Bookshelf SpeakerFrequency Response75Hz - 20kHzPower Handling100 watts Sensitivity (2.83V/1m)86dBNominal Impedance8 Ohms Dimensions (H x W x D)241mm x 159mm x 121mm / 9-1/2" x 6-1/4" x 4-3/4"Weight2.1kg / 4.5 lb