Hz 250 - 500 - 1k - 1.5k – 2k – 3k – 4k – 6k – 8k
R: 55 – 65 – 75 – 72 — 70 – 65 – 65 – 70 – 70
R: 55 – 65 – 75 – 72 — 70 – 65 – 65 – 70 – 70
[Opn]