The only Microphone I can think of with a good frequency respone at that frequency level is the:
ElectroVoice N/D767a N/DYM Professional MicrophonePolarity Supercardioid Frequency Response 35 - 22000 Hz Impedance 300 ohms Effective Output Level -51 dBm2500000 - 2200000 = 300,000
Headphone Response Bandwidth: 60 - 16000 Hz. Microphone Response Bandwidth: 100 - 10000 Hz
Frequency range is from60 Hz to 20 kHz.
2200000
66,000
2200000
2200000
The roll off filter removes low frequencies. Usually at about 75 HZ and bellow.
10% of 2,200,000 is 220,000
183.3% of 2,200,000 is 4,032,600
300,000 multiplied by 2,200,000 is 660,000,000,000.
2,200,000 multiplied by 5,100 = 11,220,000,000