Product Name: Full Range 2 Inch 4ohm 5watt Subwoofer Loud Speaker for Box Speaker Model NO.: LS52HW4-5W Brand: Jy Certification: ISO9001, CE, RoHS WORD nChannels: 2.1Channel Usage: Expand Volume Radiation Mode: Indirect Radiation Type Style: Portable Transducer Principle: Dynamic Earphone Cone: Polypropylene and Titanium Edge Transmission Mode: Air-conduction Category: Speaker Dimension: 52mm*25mm Sound Pressure Level: 98 dB (at 1.0W/0.1m with Baffle Avg0.8K,1.0K1.2 Voice Coil Imp: 4ohm Rated(Max.)Power: 5.0W Trademark: JY Transport Package: Paper Specification: 52mm*25mm Origin: China HS Code: 85318090 Product Description Product model:Φ52mm H:25mmRelated model:LS52HW4-5WPeoduct impedance:4Ω±15%Product power:5WFrequency Range:FO:20~20KHZResonant Range:300HZ±20%Sound pressure level:95±3dB