Shure PG27-USB Manual page 74

Max SPL
74
+20
+10
0
–10
–20
20 50 100
PAD OFF: 124 dB SPL
PAD ON: 144 dB SPL
20 dB
–30 dB FS
31 dB
1000 Hz
2 3 4 5 6 7 9 8 2 3
1000
Hz
–81 dB
–78 dB
4 5 6 7 9 8
10000 20000