120
121
APP
Amplification, full volume
(1 kHz, 60 dB SPL input
signal):
BE9122 Headphones
BE9124 In-ear phones
42.5 dB
55.0 dB
Amplification, full volume
(60 dB SPL input signal,
HFA):
BE9122 Headphones
BE9124 In-ear phones
46.5 dB
51.5 dB
Properties
Volume control:
9 increments of 5 dB
Tone control:
+/- 10 dB in 9 increments, cut-off frequency 1.6 kHz
On/Off button:
Clear, countersunk pushbutton
Microphone and
T position:
Separate pushbuttons
Combined sound sources:
For mixing external sound and sound
from the internal microphone
Balance control
(right/left):
0-20 dB programmable reduction in increments
of 5 dB
Setting for max. volume:
0-21 dB programmable reduction in increments
of 3 dB
Bass Reduction setting:
Lowering of frequencies under 400 Hz by 10 dB
Dynamic compressor:
•
10 channels
•
Dynamic amplification 0-35 dB
•
Compression 3:1
•
Expansion 1:1.5
•
Attack time 20 ms <3kHz, 25 ms ≥3kHz
•
Recovery time 110 ms <3kHz, 200 ms ≥3kHz
Dynamic noise reduction:
10 channel adaptive noise reduction
Feedback handling:
Adaptive feedback reduction
Digital signal processing:
Additional information:
22,050 kHz sampling frequency
16-bit resolution in stereo
•
Stereo/Mono setting
•
Factory reset feature
•
Casing designed to reduce contact noise
90
100
1000
10000
Hz
100
110
120
130
140
150
160
dB r
e 20,0 μP
a
Output signal with BE9122,
Stereo headphones
Output signal with BE9124,
In-ear phones
90
100
1000
10000
Hz
100
110
120
130
140
150
160
dB r
e 20,0 μP
a
Additional information
Environmental requirements:
For indoor use only
Operating temperature:
0°– 35° C, 32°– 95° F
Transport and storage temperature:
-10°– 50° C
Relative humidity:
15% – 90% (non condensing)
External dimensions:
H
W
D 99
48
22 mm
Weight:
75 g, 2.6 oz.
Colour:
Grey with white front panel and
silver-coloured buttons
Regulatory requirements
FCC SDoC: FCC Part 15 Subpart B, CE, RoHS, WEEE, RCM
Accessories
BE9127 External microphone
BE9159 Neck loop with 90 cm (3”) cable
BE9161 Neck loop with 15 cm (6”) cable
BE9126 Cable kit with 5 m, 16.4 ft.
BE9122 Headphones
BE9124 In-ear earphones
BE9147 Travel case
Measurements
Frequency range (acoustic) (BE9122 Headphones and BE9124 In-ear phones):
Preliminary measurements: