Guangzhou CVR Pro-Audio Co., Ltd.  

Product Name: Active Subwoofer System 18 Inch 21 Inch Bass Bin Speaker Loudspeaker Model NO.: CV-28 THD: <0.005% Certification: CE, RoHS, CCC, UL, FCC, CSA, ETL, MET Application: Commercial, Home Speaker Material: Wood Speaker System: Optional Combination Operation Mode: Wire / Remote Control Activity: Passive Hi-Fi: Hi-Fi Noise: <95dB Nominal Impedance: 4 Ohm Input Connectors: 2-Nl4 Speakon Frequency Response: 40Hz -160Hz