Panasonic WM-61A
Omnidirectional Back Electret Condenser Microphone Cartridge
WM-61A FET Impedance converter Mic Capsule 0dB=1V/Pa, 1kHz Output +Vs Ground Rel at i v e Res pons e [ dB] +20 +10 0 - 10 - 20 - 30 20 50 100 200 500 1k 2k Fr equenc y [ Hz] 5k 10k 20k