Inofrmation Sheet
Domino Classic
Personal hearing system
Features
100% digital sound processing
Crystal clear stereo sound
Encrypted wideband link
Secure from eavesdropping
Intuitive to use
No complicated menus
Works all over the world
Use Domino while travelling
Bellman® Audio Domino is a revolutionary
personal hearing system that uses digital
state-of-the-art sound processing and
wireless wideband technology to bring
out speech in difficult listening situations.
Domino delivers crystal-clear stereo sound,
free from background noise and feedback,
and with no risk of eavesdropping.
Whether you only have trouble hearing
from time to time or are already using a hearing device, it will make a big difference in
your daily life.
transmitter and a receiver, equipped with
state-of-the-art microphones.
Easy to use. Domino Classic’s unique design
makes use very intuitive. All common features
can be accessed with a single push of a button, eliminating complicated menus.
More than speech. You can also stream high
quality audio from your TV, MP3 player, computer or stereo system.
High quality. Domino Classic is designed by
Bellman & Symfon of Sweden and comes with
a two-year worldwide warranty.
How it works. Domino Classic consists of a
Sound is picked up by the microphones and
converted into digital data. Speech is clarified
and annoying background noise is eliminated. The sound is then streamed over an
encrypted wireless radio link to the receiver.
The receiver amplifies the sound and sends it
to your headphones, earphones or neck loop.
From the receiver, you can easily control
the functions of both units.
All inclusive. Domino Classic comes with
everything you need in order to use your
system. There is also a wide range of original
accessories available. Choose Domino Classic
as your personal hearing system and discover
how easily you can improve your hearing.
High Definition Audio
Domino uses all-digital technology to
stream audio in full stereo. The result
is crystal-clear stereo sound with
outstanding clarity and definition.
Wireless Secure Encryption
Domino uses state-of-the-art digital
encryption technology, resulting in
interference-free speech, absolutely
impossible to eavesdrop.
Travel Smart 2.4GHz
Domino uses the 2.4 GHz global frequency standard. This means you can
use your Domino system anywhere
in the world.
Easy Connect
Domino is ready for action with the
touch of a button, and you can just
as easily connect it to your TV, stereo
system or MP3 player.
Worldwide Warranty
Domino is developed in Sweden by
Bellman & Symfon and comes with a
two year worldwide warranty.
Technical specifications
Size and weight
Height:
99 mm
Width:
48 mm
Depth:
22 mm
Weight:
74 grams / unit
48 mm
Receiver button and controls
Tone
Internal mic.
selector
LED indicator
Volume
48 mm
99 mm
22 mm
In the box
On/Off
The package (BE8015) includes everything you normally need in order to use your Domino system.

BE2250 Receiver unit

BE2270 Transmitter unit

BE9147 Semi-soft travel case
Microphone
Headphone output
External sound selector
Volume/Tone indicator
Charger input
Transmitter button and controls
BE9142 USB universal charger including
4 mains plugs for EU, USA, Australia & China

Input signals
Microphone: Built in omnidirectional micro phone on both units

External sound source input: 2.5 mm stereo
jack plug (0 dBV max input signal)

Output signals

BE9139 Charger cable, USB

BE9135 Neck strap with safety clasp (2)

BE9124 In-ear earphones

User manual

Available bundled with BE9128 Neck loop (BE8017)
Pairing
with receiver
LED for
battery status
Microphone
Line in
Power and battery

Headphone socket: 3.5 mm stereo jack plug


Distortion: 0.05% THD (electrical)


Frequency range: 40-10 000 Hz

Tone control: 9 steps

Volume control: 9 steps

Output power: 100 mW (16 Ω load)
On/Off
Charger input
Built in rechargeable lithium-ion batteries
Operating time: 8-12 hours
(With included light weight battery)
Charging time: 2.5 hours
(With included light weight battery)

Accessories
The following accessories are available:

BE2250 Additional receiver unit
 BE9122 Stereo headphones
Radio communication

Frequency 2.4 GHz, uses 3 frequencies
Range


25 m indoors, clear line of sight
100 m outdoors, clear line of sight
Characteristics:
Encrypted communication
Automatic channel searching
Coexists with other radio transmitters
operating on the 2.4 GHz frequency band
Acoustic specifications
Maximum output using BE9124 earphones
132 dB SPL

Gain at full volume using BE9124 earphones
(60 dB SPL input signal):
57,5 dB @ 1kHz
56 dB HFA


Distortion
Using BE9124
Using BE9122
0,08 % THD
0,6 % THD
Environmental requirements
Regulatory requirements
Operating temperature: 32° to 95° F
(0° to 35° C)


Relative humidity: 5% to 95%
(non condensing)

Complies with the following requirements:
CE, FCC, RoHS, WEEE and C-Tick

BE9124 Stereo in-ear earphones

BE9125 Stetoclips

BE9127 Tie-clip microphone
BE9137 Cable kit, 5 m (stereo) incl.
adapter from 3,5 mm stereo tele jack
to RCA (phono)


BE9128 Neck loop

BE9143 USB car charger

BE1360 Scart switch
Visit www.bellman.se/dominoclassic
for detailed information
© 2010, Bellman & Symfon AB
Bellman, Bellman Visit, Bellman Audio and
Bellman & Symfon are registered trademarks
owned by Bellman & Symfon AB, all rights
reserved. All Product designs are patented.
In-depth technical information
Features
Technical specifications
Acoustic specifications
 Digital Signal Processing, DSP
 Dimensions: 99 mm (h) x 48 mm (b) x 22 mm (d)
 Maximum output saturation
 Built in omnidirectional electret micro-
 Weight: BE2250: 74 g, BE2270: 70 g
phones on both units
 Batteries: Built in rechargeable lithium-ion, 617 mAh
 Using BE9122 Headphones
BE2250: 124.3 dB SPL / BE2250: 124.3 dB SPL (@ 2.5 kHz)
 10 channel dynamic range compressor
 Operating time: 8-12 hours (fully charged)
 10 channel dynamic noise suppression
 Charging time: 2.5 hours (max)
 Adaptive feedback manager
 Ext. Mic./Aux. in connector: 2.5 mm stereo tele jack
 Digital radio transmission using broadband
 Headphones connector: 3.5 mm stereo tele jack
technology
 Uses the non-licensed 2.4GHz ISM band
 128 bit encrypted radio communication
 One transmitter to one or multiple receivers
 Volume control: 9 steps (5 dB/step)
 Intuitive user interface
 LED lightbar for excellent readability
 9 step volume control (5 dB/step)
 9 step tone control
 Clear indication of Volume, Tone, Mic & RF mode
 Low battery warning indicator
 Mic and RF mode: Separate mode select buttons
 Auxiliary stereo signal input (2.5 mm tele jack)
 Headphones stereo output (3.5 mm tele jack)
 Mix mode mixes sound from transmitter and receiver
 Tone control: 9 steps
 External microphone / Aux in
 Using BE9122 Headphones
BE2250: 46.5 dB / BE2250: 49.0 dB
0-35 dB
3:1
1:1.5
20 (25) ms (≥3 kHz)
110 (200) ms (>3 kHz)
 Dynamic noise reduction
 BE9124 Earphones included
BE9135 Neck strap with safety clasp included (2)
 Polished stainless steel belt clip included (2)
the 2.4 GHz ISM band
 Automatic channel allocation
 128 bit encryption
 Topology
 Supported configuration
Consists of one Domino Pro transmitter and one
or more Domino Classic receiver(s) and Domino
Pro receiver(s), in any combination.
 Non recommended configuration
Consists of one Domino Classic transmitter and
one or more Domino Classic receiver(s) and
Domino Pro receiver(s), in any combination.
Output using BE9124 Earphones
dB SPL
Point-to-point or point-to-multipoint
 Diversity
2 antennas receive, 1 antenna transmits Rx + Rx/Tx
 Radio range
25 m indoors, clear line of sight
100 m outdoors, clear line of sight
100
1000
10 000
Hz
Input signal
60 dB SPL
90 dB SPL
 Output power tele-jack 100 mW w. 16 Ω last
 Distortion
0.05 % THD
 Dynamic range
95 dB
 Frequency range
40 – 10 000 Hz
 Tone control
 Break point at 1.6 kHz
 Tone, high: +10dB@3.15 kHz, -6dB@250Hz
 Tone, mid: flat
 Tone, low: -10dB@3.15 kHz
No bass boost
Output using BE9122 Headphones
Output using BE9125 Stetoclips
dB SPL
130
dB SPL
140
120
130
110
120
100
90
110
100
90
70
100
1000
10 000
Hz
Input signal
70 dB SPL
Electrical specifications
 Line in sensitivity
80
90
100
 Using BE9124 Earphones
0.08 % THD
0 dBV (maximum input level)
dB re 20,0 µPa
dB re 20,0 µPa
110
 Using BE9122 Headphones
0.6 % THD
 Transmitter output: max 25 mW
130
120
 Using BE9125 Stetoclips
BE2250: 52.0 dB / BE2250: 59.4 dB
dB re 20,0 µPa

 Digital signal processing
 22 050 kHz sampling frequency
 16 bit resolution in stereo
 Digital radio transmission
 2.4 GHz ISM band, 3 channels
 Coexists with other radio transmitters using
 BE9147 Semi-soft travel case included
 Using BE9124 Earphones
BE2250: 51.5 dB / BE2250: 56.0 dB
 Distortion
Adaptive phase-invert feedback cancellation
for EU, USA & Australia are included
 Using BE9125 Stetoclips
BE2250: 58.2 dB / BE2250: 64.2 dB
 Gain, full volume (60 dB SPL input signal, HFA)
 Feedback cancellation
 BE9142 USB universal charger with 4 mains plugs
 Using BE9122 Headphones
BE2250: 42.5 dB / BE2250: 44.0 dB
 Dynamic Compressor
 Dynamic gain range  Compression
 Expansion
 Attack time
 Release time 
 Built-in rechargeable lithium-ion batteries
 Gain, full volume (1 kHz, 60 dB SPL input signal)
Selects automatically when plugged in
10 channel adaptive noise reduction
 Requires no individual fitting
 Using BE9125 Stetoclips
BE2250: 133.7 dB SPL / BE2250: 133.6 dB SPL (@ 1 kHz)
 Using BE9124 Earphones
BE2250: 55.0 dB / BE2250: 57.5 dB
 Power switch: On/Off toggle button
 Auto mute when switching between signal sources
High gloss finish to minimize handling sound
 Using BE9124 Earphones
BE2250: 132.0 dB SPL / BE2250: 130.5 dB SPL (@ 5 kHz)
60 dB SPL
80
100
1000
10 000
Hz
Input signal
70 dB SPL
90 dB SPL
60 dB SPL
70 dB SPL
90 dB SPL
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