ManualGENERAL SPECIFICATIONSNominal diametermm (in)380 (15)Nominal ImpedanceOhm8Minimum impedanceOhm5,9Program powerW400AES Power ratingW200SensitivitydB98Frequency rangeHz40 ÷ 3000Voice coil diametermm (in)51 (2)Chassis materialSteelMagnet materialFerriteMagnet dimensions OD x ID x hmm (in)140 x 60..