會議麥克風(fēng)產(chǎn)品GC-61參數(shù)：
Element: Back electret condenser ;
Polar pattern:Uni-directional ;
Frequency response:50Hz-18KHz ;
Sensitivity :-42dB±3dB ;
Output impedance :200Ω±30% ; 

補充說明：
GC-61

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