ManualGENERAL SPECIFICATIONSNominal diametermm (in)70 (3)Nominal ImpedanceOhm8Minimum impedanceOhm6,9Program powerW60AES Power ratingW30SensitivitydB85,5Frequency rangeHz100 ÷ 2000Voice coil diametermm (in)20 (0.75)Chassis materialSteelMagnet materialFerriteMagnet dimensions OD x ID x hmm (in)70 x 3..