Panasonic WH-416KZ Operating Instructions Manual page 34

Performance
OSPL90 frequency response curve and
Full on acoustic gain response curve
34
(Continued)
According to IEC 60118-7:2005
OSPL90 curve (Saturation output
curve) and Full on gain response curve
According to ANSI S3.22-2003 (Includes April 2007 Erratum)