Volume Control
Adjust the sound volume to your comfortable level with
the volume control. The best position of the control will
depend upon the distance and voice of the person to
whom you are talking; readjustment may be necessary.
When using the hearing aid for the fi rst time, set
the control for a minimum sound level to hear, then
increase the volume gradually.
When you remove the hearing aid from your ear
Set the switch to "O" to power off
and remove the hearing aid from
your ear.
When removing the hearing aid with
the switch setting "M" or "T", acous-
tic feedback (high-pitched sounds)
might be heard.
O-T-M Switch
O: Power Off
Set to "O" when the hearing aid is not in use.
T: Induction coil (telephone coil)
Set to "T" when the hearing aid is used for tele-
phone or loop system.
When the switch of the hearing aid is set to T, noise may be heard
in the vicinity of electromagnetic fi elds, such as generated for
example by electronically secured gates or similar.
M: Microphone
Set to "M" for normal use.
When taking off the hearing aid, set the switch to "O". If not, acoustic
feedback may occur.
Note:
(1) Production number (serial number) is indicated inside the
battery holder.
(2) Manufacturer's name is imprinted at the battery holder.
Increase
Reduce
O
T
M
EC REP
RION CO., LTD.
3-20-41 Higashimotomachi, Kokubunji,
Tokyo 185-8533, Japan
RION CO., LTD. Europe Representative Office
Schaepmanlaan 66, 4623 XZ, Bergen op Zoom,
THE NETHERLANDS
Set to "O"
On
Off
O
T
M
TECHNICAL DATA
(According to IEC Standard Pub. 60118-0 1983)
Reference Test Frequency
1600 Hz
OSPL
90
136 dB
500 Hz
132 dB
Peak
141 dB
Full on Acoustic Gain
68 dB
Equivalent Input Noise Level
24 dB
Total Harmonic
Distortion
500 Hz
19%
800 Hz
10%
1600 Hz
4%
Induction Coil Sensitivity
92 dB at 1 mA/m
Operating Switch
O-T-M
Output Limiting Control
MOP, range 18 dB (continuous)
Tone Control
N - H1 - H2 (continuous)
Circuitry
Push - Pull
Battery Type
PR48P
Supply Voltage
1.3 V
Battery Current
2.1 mA
Battery Life
100 h
Dimensions
3.55 × 1.3 × 0.88 cm
Weight (excluding battery)
4.3 g
(Typical value)
TECHNICAL DATA
(According to ANSI Standard S3.22 1987)
Maximum SSPL90
136 dB
HFA-SSPL90
132 dB
HFA-full-on Gain
65 dB
Reference Test Gain
55 dB
Frequency Range
180 Hz to 5600 Hz
Equivalent Input Noise Level
23 dB
Total Harmonic
Distortion
500 Hz
4%
800 Hz
1.6%
1600 Hz
2%
Induction Coil Sensitivity
112 dB at 10 mA/m
Operating Switch
O-T-M
Output Limiting Control
MOP, range 18 dB (continuous)
Tone Control
N - H1 - H2 (continuous)
Circuitry
Push - Pull
Battery Type
13
Supply Voltage
1.3 V
Battery Current
2.7 mA
Battery Life
80 h
Dimensions
3.55 × 1.3 × 0.88 cm
Weight (excluding battery)
4.3 g
(Typical value)
No. 41604 08-10
Basic frequency response curve
and effect of tone control
OSPL
90
curve and effect of
output limiting control
SSPL90 curve and effect of
output limiting control
Full-on acoustic gain frequency
response curve
Full-on gain curve
Frequency response curve and
effect of tone control
Induction coil frequency
response curve
Induction coil frequency
response curve
