D-0100778 Rev C
101
Insert Earphones - Pure Tone RETSPL
Transducer
EAR3A
IP30
EAR3A
IP30
Impedance
50 Ω
50 Ω
50 Ω
50 Ω
Coupler
2ccm
2ccm
711
711
RETSPL
RETSPL
RETSPL
RETSPL
125 Hz
26
26
28
28
160 Hz
22
22
24.5
24.5
200 Hz
18
18
21.5
21.5
250 Hz
14
14
17.5
17.5
315 Hz
12
12
15.5
15.5
400 Hz
9
9
13
13
500 Hz
5.5
5.5
9.5
9.5
630 Hz
4
4
7.5
7.5
750 Hz
2
2
6
6
800 Hz
1.5
1.5
5.5
5.5
1000 Hz
0
0
5.5
5.5
1250 Hz
2
2
8.5
8.5
1500 Hz
2
2
9.5
9.5
1600 Hz
2
2
9.5
9.5
2000 Hz
3
3
11.5
11.5
2500 Hz
5
5
13.5
13.5
3000 Hz
3.5
3.5
13
13
3150 Hz
4
4
13
13
4000 Hz
5.5
5.5
15
15
5000 Hz
5
5
18.5
18.5
6000 Hz
2
2
16
16
6300 Hz
2
2
16
16
8000 Hz
0
0
15.5
15.5
9000 Hz
10000 Hz
11200 Hz
12000 Hz
12500 Hz
14000 Hz
16000 Hz
18000 Hz
20000 Hz
IP30 / EAR3A 2ccm uses ANSI S3.7-1995 IEC60318-5 coupler (HA-2 with 5mm rigid Tube) and
RETSPL comes from ANSI S3.6 2010 and ISO 389-2 1994
IP30 / EAR3A Ear simulator uses ANSI S3.25- IEC60318-4 coupler and RETSPL comes from ANSI
S3.6 2010 and ISO 389-2 1994
