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Volume switching

The selector button gives access to four different volume level 
settings *. Using the selector button in the way shown below 
lets you switch between the settings. When power to the hear-
ing aid is turned on (the battery holder is closed), the volume 
setting will be "Level 1". Depending on the environment (noisy 
location, quiet location, etc.) you may want to change the setting. 
When you operate the button, a beep sound pattern indicates 
the change. 

*  These have been optimized for your individual requirements.

No. 51970  07-06

you switch between the settings. When power to the hearing 
aid is turned on (the battery holder is closed), the setting will be 
"Memory 1". Depending on the environment (noisy location, quiet 
location, etc.) you may want to change the setting. When you op-
erate the button, a beep sound pattern indicates the change. 

*  These  have  been  optimized  for  your  individual  requirements. 

There may be from 1 to 4 different memory settings. 

120

0dB=20µPa

1600 2500

110

100

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80

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Frequency (Hz)

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Input SPL 60dB

130

0dB=20µPa

1600 2500

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Frequency (Hz)

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Input SPL 90dB

60

1600 2500

50

40

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20

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Input SPL 50dB

(0dB=20µPa)

Frequency (Hz)

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0dB=20µPa

1600 2500

110

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90

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Frequency (Hz)

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Input SPL 60dB

60

1600 2500

50

40

30

20

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1000

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Input SPL 60dB

(0dB=20µPa)

Frequency (Hz)

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Full-on gain curve

Frequency response curve

OSPL90 curve

Full-on acoustic gain 
frequency response curve

Basic  frequency  response 
curve

Note:

(1)  Production number (serial 

number)  is  indicated  at 

the upper rear side of the 

unit.

(2) Manufacturer's  name  is 

imprinted at the lower rear 

side of the unit.

TECHNICAL DATA 

(

According to ANSI standard S3.22 2003

)

Maximum OSPL90

113 dB (660 Hz)

HFA-OSPL90

107 dB

HFA-full-on Acoustic Gain   38 dB
Reference Test Gain

  30 dB

Frequency Range

200 Hz to 5000 Hz

Equivalent Input Noise Level

 

31 dB

Total Harmonic Distortion  500 Hz: 1%  800 Hz: 1%  1600 Hz: 1%
AGC
(Attack / Recovery Time)

Input AGC

Attack: 

3 msec or 400 msec

Recovery: 100 msec or 600 msec or 

15 sec

Output AGC

Attack: 

3 msec

Recovery: 50 msec

Battery Type/Supply Voltage 312/1.4 V
Battery Current/Battery Life 0.90 mA/160 hours

Dimensions/Weight

3.82 × 2.03 × 0.80 cm /

1.9 g (excluding battery)

(Typical value)

TECHNICAL DATA 

(

 

)

Reference Test Frequency 1600 Hz
OSPL

90

113 dB

500 Hz

116 dB

Peak

117 dB

Full-on Acoustic Gain

  43 dB

Equivalent Input Noise Level   30 dB
Total Harmonic Distortion 500 Hz: 1%  800 Hz: 1%  1600 Hz: 1%
AGC
(Attack / Recovery Time)

Input AGC

Attack: 

3 msec or 400 msec

Recovery: 100  msec  or  600  msec  or 

15 sec

Output AGC

Attack: 

3 msec

Recovery: 50 msec

Battery Type/Supply Voltage PR41 (312)/1.4 V
Battery Current/Battery Life 0.85 mA/170 hours

Dimensions/Weight

3.82 × 2.03 × 0.80 cm /

1.9 g (excluding battery)

(Typical value)

According to IEC standard Pub. 60118-0-1983 

Amendment 1-1994

Level

1

(

Medium*)

2 beeps

Beep sound

Power-on

Beep sound

Beep sound

Level

2

(High*)

Level

3

(

Maximum*)

Level

4

(

Low*)

3 beeps

4 beeps

Beep sound

1 beep

* These are the standard volume settings.

They can be changed by your hearing aid professional.

Memory

1

2 beeps

Beep sound

Power-on

Beep sound

Beep sound

Memory

2

Memory

3

Memory

4

3 beeps

4 beeps

Beep sound

1 beep

Memory switching

The selector button gives access to four different memory set-
tings *. Using the selector button in the way shown below lets 

Turn-on precaution

If the hearing aid is turned on again immediately after turning it off, 
there may be no sound, but this is not a defect. In such a case, 
turn the power off (open battery holder) and wait 10 seconds. 
Then turn the power on again (close battery holder).

Adjusting the Controls

This hearing aid is a digital type. Any adjustments must be done 
at the dealer. For details, please contact the dealer.

130

0dB=20µPa

1600 2500

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Frequency (Hz)

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Input SPL 90dB

OSPL

90

 curve

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