Panasonic WH-103JZ Operating Instructions Manual page 41

Basic frequency response curve
120
110
100
90
80
70
60
50
100
Frequency [Hz]
According to IEC 60118-7:2005
1k 10k
Frequency response curve
According to ANSI S3.22-2003 (Includes April 2007 Erratum)
120
110
100
90
80
70
60
50
100
Frequency [Hz]
1k 10k
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