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Dia.: 50MM
Operation: To be normal music source 0.5watt;Max 1.0 Watt
Input: To be normal oscillartor 1.41 volt
Impedance: 8Ω±15% measure at 1KHZ
Resonant Freq.: 550hz±20% measure at 1.41 volt
Freq. response: FO-5000 hz
Sensitivity: 85±3dB
Frequency response curve: Measure 1watt 0.5meter