> 技術(shù)指標(biāo) 產(chǎn)品型號(hào) Model .................................................. AMW-658 型 式 Type..................................................... 動(dòng)圈式 指向特性 Speciality..................................................心型 頻率響應(yīng) Frequency response ...................................50Hz-18KHz 阻 抗 Nominal impedance ....................................300Ω±30% 靈 敏 度 Sensitivity(1W/1m) ...................................-74dB±3dB