ReSound RT977-DWC User Manual

Technical specifications
Mini BTE
Models: RT971-DWC, RT771-DWC, RT571-DWC, RT471-DWC
Thin
tube Closed
140
130
120
110
100
90
80
Maximum Output (OSPL 90)
Frequency (Hz)
Output (dB SPL)
70
60
50
40
30
20
10
Full-On and Reference Test Gain
Frequency (Hz)
Gain (dB)
Full-on gain
50dB SPL input
Reference test gain
60dB SPL input
Black curve: Thin tube
Grey curve: Closed
Reference test gain (60 dB SPL input) HFA 35 42 dB
Full-on gain (50 dB SPL input)
Max.
HFA
51
44
58
51
dB
Maximum output (90 dB SPL input)
Max.
HFA
122
111
125
118
dB SPL
Total harmonic distortion
500 Hz
800 Hz
1600 Hz
3200 Hz
0.2
0.1
0.4
0.3
0.3
0.7
0.4
0.1
%
Telecoil sensitivity (1 mA/m input)
HFA - SPLIV @ 31.6 mA/m (ANSI)
Full-on telecoil sensitivity @ 1 mA/m
Max.
HFA
HFA
82
96
76
89
102
81
dB SPL
Equivalent input noise, w/o noise reduction
1/3 Octave Equivalent input noise, w/o noise reduction
22
9
20
10
dB SPL
Frequency range IEC 60118-0: 2015
100-
6980
100-
6380
Hz
Battery Lifetime (Battery type Rechargeable) 25 25 Hours
Data in accordance with ANSI S3.22-2014, IEC 60118-0:2015. Measured in a 2cc coupler.
70 Technical specifications

ReSound RT977-DWC Specifications

General

Brand	ReSound
Model	RT977-DWC
Category	Hearing Aid
Language	English