Item Type:SpeakersBrand Name:AlpineModel Name:DDT-F25BImpedance:4��Signal To Noise Ratio:0.1Car Maker:Acura，Aston Martin，Audi，Bentley，BMW，Bugatti，Buick，Cadillac，Chevrolet，Chrysler，citroen，Daewoo，Dodge，Ferrari，Ford，GMC，Honda，Hummer，Hyundai，Infiniti，Jaguar，Jeep，Kia，Lamborghini，Land Rover，Lexus，Lincoln，Lotus，Maserati，Maybach，Mazda，Mercedes-Benz，Mercury，Mini，Mitsubishi，Nissan，Opel，peugeot，Pontiac，Porsche，Ram，renault，Rolls-Royce，Saab，Saturn，Scion，Shelby，skoda，Smart，Subaru，Suzuki，Tesla，Toyota，Volkswagen，Volvo，yamahaFrequency Range (Hz):4 KHZ ~ 26 KHZOut Power:180wattMaterial Type:silk membrane trebleSpeakers Types:Speakers SetsItem Size:1inchVoltage:12VAudio Sensitivity:TweetersSpecial Features:High EfficiencyCar Make:allColor Name:BlackItem Weight:0.28 kgLow surface diameter of 5.5 CM in diameter 4 CM thickness 2 CM lower plane installation. The depth of the installation.