Guangzhou Hiwell Audio Electronics Co., Ltd.  

Product Name: Heavy Duty Powered Speaker 4400 Watt PRO Audio 21'' Neodymium Subwoofer Model NO.: 21NDS151U1 Certification: CE, RoHS, FCC Application: Stage Speaker Material: Plastic Operation Mode: No Activity: Passive Noise: 0 AES Power Rating: 2200 W Program Power: 4400 W Voice Coil: 6''vc Copper in/out Frequency Range: 29-1000Hz Sensitivity: 97 dB Impedance: 8 Ohm Magnet: Neodymium Chassis: Aluminium Trademark: CI Transport Package: Carton Specification: 570 x 570 x 307 mm Origin: China HS Code: 8518290000 Product Description Heavy Duty Powered Speaker 4400 Watt PRO Audio 21'' Neodymium Subwoofer6 INCH COPPER VOICE COIL97 dB/SPL SENSITIVITY4400 WATT PROGRAM POWER HANDINGFEM OPTIMIZED MOTOR AND SUSPENSIONS53mm PEAK TO PEAK MAXIMUM EXCURSIonOPTIMIZED COOLING SYSTEMALUMINIUM DEMODULATING RINGDOUBLE SPIDERRESonANCE FREE AND HEAVY DUTY BASKET DESIGNTRIPLE ROLL SURROUNDGENERAL SPECIFICATIonSNominaldiametermm(in.)548(21)NominalimpedanceΩ4MinimumimpedanceΩ4.5Programpower(1)W4400AESPowerrating(2)W2200Sensitivity(3)dB97FrequencyrangeHz29~1000Voicecoildiametermm(in.)151(6)ChassismaterialAluminiumMagnetmaterialNeodymiumMagnetdimensions(ODxIDxh)mm145x60x10CoilmaterialSVFormermaterialGlassFiberXmax(4)mm15.8Xmech(5)mm26.5Gapheightmm17VoicecoilWingdingheightmm40SMALL SIGNAL PARAMETERSDCresistanceReOhm3.6ResonancefrequencyFsHz29MovingmassMmsg407ComplianceCmsmm/N0.07ForcefactorBLN/A32MechanicalQ-factorQms5.8ElectricalQ-factorQes0.35TotalQ-factorQts0.33EquivalentairvolumeVasI371VoicecoilInductanceLemH3.2DiaphragmareaSdcm²1750ReferenceefficiencyEta0%2.9SHIPPING INFORMATIONNetweightKg22.1Multipacksize(1)(WxDxH)mm570x570x307MultipackweightKg24.6QualityAssuranceSince the raw material sent in untill the speaker sent out, every aspect of them will be fully checked.We have many advanced test equipments to measure the quality of products. No defectives will be send out.Our company have a nice quality control managing system(QC) that have strict management ofproducts and staffs.FAQ1.Q:Areyouafactoryortradingcompany?A:Weareamanufacturer withourownfactory ,we have more than 15years experience.2.Q:CanyoudoOEMandODM?A:Yes,both.We can put your idea into products.3. How many days do you need to prepare the goods?We need about 20-25working days for large order.