... !Guangzhou Baiyun Xinbaosheng Professional Electroacoustic Equipment Factory WL series active speaker with USB/MP3/SD/MMC Card Slot SPECIFICATIONPlace of OriginGuangzhouBrand ... , Center:200Hz-18Khz,Satellite:200Hz-18KhzSensitivitySubwoofer:89±3dB,Center:88±3dB,Satellite:88±3dBImpedanceSubwoofer:4Ω,Center4Ω,Satellite:4ΩMOQ1 UNITWarranty time1 yearFUNCTIONWith ...