| AC dBHL | AC dBHL | BC dBHL |
Hz | TDH39 | EAR 3A | B71 |
125 | 90 | 90 | |
250 | 110 | 105 | 45 |
500 | 120 | 110 | 65 |
750 | 120 | 115 | 70 |
1000 | 120 | 120 | 70 |
1500 | 120 | 120 | 70 |
2000 | 120 | 120 | 75 |
3000 | 120 | 120 | 80 |
4000 | 120 | 115 | 80 |
6000 | 120 | 100 | 55 |
8000 | 110 | 95 | 50 |