Filter 1 ~~~~~~~~ 20 25 31.5 40 50 63 80 100 125 160 136.9 127.7 120.8 115.7 111.7 108.4 105.8 103.6 101.6 99.7 200 250 315 400 500 630 800 1000 1250 1600 97.7 95.8 93.6 91.5 89.7 87.8 86.5 86.3 86.8 87 2000 2500 3150 4000 5000 6300 8000 10000 12500 16000 87.1 85.9 83.2 82.6 85.4 91 97.6 101.3 107.5 127.3 Above 12.5 kHz assume a drop of 5.657 dB/kHz Filter 2 ~~~~~~~~ Correction 1 ~~~~~~~~~~~~ Correction 2 ~~~~~~~~~~~~