Basic Info.Model NO.:SD-1118AType:SpeakerSpeaker Design: compression driver Material:AluPackage:CartonTrademark:OEMOrigin:Guangzhou, ChinaSize:1.5 InchesProduction Capacity:5000PCSProduct DescriptionThroat Diameter: 1"(25.4mm)Mounting Type: Screw on 1-3/8"Magnet Material: Neodymium (70mm)Voice Coil Diameter: 1.5"(38mm)Frequency Range: 1.6KHz-20KHzSensitivity(1W/1M): 105 dBPower: 30Watts RMSImpedance: 8 ohmFAQ:1. WHO WE ARE:Welcome to SOUNDSING AUDIO. A full line professional audio manufacturer located in Guangzhou  City, China, we provide our customers with user-friendly audio equipment that combines unmatched reliability with advanced performance features.2. The reason to work with SOUNDSING AUDIO:1) Focus on details expecially on the quality of materials2) Full line pro audio  service3) Well quality control 4) Minimum OEM/ODM quantity request5) fashionable design, your idea we create.Drawing on the strength of this organization and our passion for detail, SOUNDSING AUDIO is committed to provide its customers with the quality products that represents the best value for our customers' audio products. We are dedicated to your  satisfaction.