D-0123234-D – 2020/05
Affinity Compact - Instructions for Use - EN Page 65
IEC SPEECH RETSPL
Impedance 10 Ω 10 Ω 10 Ω 40 Ω 23 Ω 10 Ω 10 Ω 10 Ω 10 Ω 12.5 Ω 12.5 Ω
L
L
Speech 20 20 20 20 20
Speech Equ.FF. 3.5 0.5 1.5 3.5 1
Speech Non-linear 6 7 4.5 5.5 2 20 20 55 63.5 55 63.5
Equ.FF.
Speech noise
6 7 4.5 5.5 2 20 20 55 63.5 55 63.5
DD45 (G
F
-G
C
) PTB-DTU report 2009-2010.
TDH39 (G
F
-G
C
) IEC60645-2 1997.
DD65V2 (GF-GC) PTB-AAU report 2018.
DD450 (G
F
-G
C
) ANSI S3.6 2018 and ISO 389-8 2004.
HDA300 (G
F
-G
C
) PTB report 2013.
IEC Speech level IEC60645-2 1997 (acoustical linear weighting).
IEC Speech Equivalent free field level (G
F
-G
C
) from IEC60645-2 1997 (acoustical equivalent sensitivity weighting).
IEC Speech Not linear level 1 kHz RETSPL (DD45, TDH39, DD65V2, DD450, HDA300) and EAR3A, IP30, B7 and B81 IEC60645-2
1997 (no weighting).
IEC SPEECH MAX. HL
10 Ω
Speech 110 110
90 95
Speech Equ.FF. 115 120
100 110
110
90
Non-linear
115 115
105 120 90 90 50 40 50 40
White noise in