General SpecificationsNominal diameter12", 305mmPower rating30WrmsNominal impedanceAvailable 8Sensitivity100dBChassis typePressed steelVoice coil diameter1.75", 44.5mmVoice coil materialRound copperMagnet typeCeramicMagnet weight50oz, 1.42kgFrequency range75-5000HzResonance frequency, Fs85HzDC resistance, Re6.7¿ and 13.1¿Mounting InformationCut-out diameter11.1", 283mmDiameter12.2", 309mmMagnet structure diameter6.1", 156mmMounting slot dimensions0.31", 7.9mm ØMounting slot PCD11.7", 297mmNumber of mounting slots4Overall depth5.3", 135mmUnit weight10.4lb, 4.7kg