Product Name: 12 Inch New Design Neodymium 3" Vc Professional Audio Speaker Model NO.: 12NDF75U1-8 THD: <0.005% Monitor: No Certification: CE, RoHS, CCC, FCC Application: Professional Speaker Material: Wood Speaker System: Professional Cabinet Operation Mode: Put in Cabinet Activity: Passive Hi-Fi: Not Hi-Fi Noise: <95dB Trademark: HIWELL Transport Package: Export Carton Specification: 12inch Origin: Made in China HS Code: 8518290000 Product Description 12 Inch New Design Neodymium 3" VC professional audio speaker97dB SPL3"VC 400W AESNeodymium RingPaper cone with coatingGENERAL SPECIFICATIonSNominal diametermm (in.)311(12)Nominal impedanceΩ8Minimum impedanceΩ6.9Program power (1)W800AES Power rating(2)W400Sensitivity (3)dB97Frequency rangeHz57 ~ 3500Voice coil diametermm (in.)75(3)Chassis materialAluminiumMagnetmaterialNeodymiumMagnet dimensions (ODxIDxh)mm74 x 15 x 10Coil materialCCAWFormer materialGlass FiberXmax(4)mm6.5Xmech(5)mm12Gap heightmm10Voice coil Wingding heightmm18SMALL SIGNAL PARAMETERSDC resistanceReOhm5.3Resonance frequencyFsHz57Moving massMmsg63ComplianceCmsmm/N0.15Force factorBLN/A17.80Mechanical Q-factorQms5.7Electrical Q-factorQes0.34TotalQ-factorQts0.32Equivalent air volumeVasI70Voice coil InductanceLemH0.70Diaphragm areaSdcm²544Reference efficiencyEta 0%2.6SHIPPING INFORMATIonNet weightKg4.3Multipack size (1) (W x D x H)mm325 x 325 x 175Multipack weightKg4.9