Bellman & Symfon Domino Classic User manual

Domino Classic is a personal hearing system
that helps you hear better in most everyday
situations, whether you use hearing aids or
just suer the occasional hearing diculty.
Digital signal processing. Domino Classic
uses digital state-of-the-art signal processing
technology. As a result, the system delivers
music and speech with incredible detail, even
in dicult listening situations.
Worry free communication. Domino Classic
uses the 2.4 GHz global frequency standard
for wireless broadband communication, just
like your Wi-Fi computer at work. This means
you can use Domino Classic anywhere in the
world.
The system uses secure 128-bit digital en-
cryption technology which makes it virtually
impossible to eavesdrop.
Pocket size and super light. The units are as
small as a modern cell phone and weigh just
2½ oz each. So they can be kept discreetly in
your pocket without weighing you down.
Easy to use. The system is virtually intuitive
to use. All functions are accessed with the
simple press of a button and there are no
complicated menus to navigate.
Long lasting power. The units are powered
with rechargeable lithium-ion batteries, just
like a modern cell phone. So you never need
to worry about buying new batteries.
Domino Classic
Personal hearing system
Features
Digital signal processing
Sound with incredible detail
Encrypted broadband link
Secure from eavesdropping
Easy to use
Be up and running within minutes
Pocket size and light
Fits discretely in your pocket
Television,
MP3 player, stereo
Enjoy music and TV. Connect the Domino
Classic transmitter to your TV or stereo
system and enjoy wireless broadband Hi-
sound at your own volume.
High quality. Domino Classic is designed
by Bellman & Symfon of Sweden and comes
with a two-year worldwide warranty.
Hearing aids,
earphones etc.
Speech SpeechTransmitter Receiver
Wireless
broadband link
in out

In the box
The package, BE8015 includes everything you
normally need in order to use your system.

BE2250 Receiver unit

BE2270 Transmitter unit

BE9142 USB universal charger including
4 mains plugs for EU, GB, US and AU

BE9147 Black canvas travel case

BE9124 In-ear stereo earphones

BE9135 Neck straps with safety clasp and polished
stainless steel belt clips

User manual

Available bundled with BE9159 Neck loop (BE8017)
Power and battery

Built in rechargeable lithium-ion battery on
both units

Operating time: 8-12 hours
(With included light weight battery)

Charging time: 2.5 hours
(With included light weight battery)

Acoustic specications

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 0.08 % THD
Using BE9122 0.6 % THD
Regulatory requirements

Complies with the following requirements:
CE, FCC, RoHS, WEEE, RCM and UL
Receiver button and controls
Transmitter button and controls
Tone
Int. Mic.
selector LED indicator
Volume On/O Microphone
Headphone
output
Ext. sound selector
Volume/Tone indicator
Charger input
LED for
battery status
Microphone
Pairing
with receiver
Line in
On/O
Charger input
Size and weight
Height: 3.9", 99 mm
Width: 1.9", 48 mm
Depth: 0.9", 22 mm
Weight: 2.4 oz, 74 grams / unit
Input signals

Microphones: Built in omni directional
microphones on both units

External sound source input: 2.5 mm stereo
jack plug (0 dBV max input signal)
Output signals

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, cut-o frequency 1.6 kHz

Output power: 100 mW (16 Ω load)
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
Environmental requirements

Operating temperature: 32° to 95° F
(0° to 35° C)

Relative humidity: 5% to 95%
(non condensing)
Accessories
The following accessories are available:

BE2250 Additional receiver unit
BE9122 Stereo headphones

BE9124 Stereo in-ear earphones

BE9125 Stetoclips

BE9127 Tie-clip microphone

BE9126 Cable kit, 5 m (stereo) incl.
adapter from 3.5 mm stereo tele jack
to RCA (phono)

BE9159 Neck loop

BE9143 USB car charger
0.9", 22 mm 1.9", 48 mm 1.9", 48 mm
3.9", 99 mm
Technical specications
© 2016, Bellman & Symfon AB
Bellman and Bellman & Symfon are registered tra-
demarks owned by Bellman & Symfon AB, all rights
reserved. All Product designs are patented. Subject
to change without prior notice.
BE2250_021DAS002_EN bellman.com

Features
Digital Signal Processing, DSP
Omni directional microphones on both units
Dynamic range compressor
Dynamic noise reduction
Adaptive feedback manager
Radio transmission using broadband technology
Uses the non-licensed 2.4GHz ISM band
One transmitter to one or multiple receivers
Intuitive user interface
LED light bar for excellent readability
Clear indication of Volume, Tone, Mic & RF mode
Low battery warning indicator
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
Auto mute when switching between signal sources
High gloss nish to minimize handling sound
Requires no individual tting
Built-in rechargeable lithium-ion batteries
BE9142 USB universal charger with 4 mains plugs
for EU, GB, US & AU are included
BE9147 Black canvas travel case included
BE9124 Earphones included
BE9135 Neck straps with safety clasp and polished
stainless steel belt clips included
Available bundled with BE9159 Neck loop (BE8017)
Supported conguration
1 Domino Pro transmitter and 1+ Domino Classic
receiver(s) and 1+Domino Pro receiver(s).
Non recommended conguration
1 Domino Classic transmitter and 1+ Domino Classic
receiver(s) and 1+Domino Pro receiver(s).
Technical specications
Dimensions: 99 mm (h) x 48 mm (b) x 22 mm (d)
Weight: BE2250: 74 g, BE2270: 70 g
Batteries: Built in rechargeable lithium-ion, 617 mAh
Operating time: 8-12 hours (fully charged)
Charging time: 2.5 hours (max)
Ext. Mic./Aux. in connector: 2.5 mm stereo tele jack
Headphones connector: 3.5 mm stereo tele jack
Volume and Tone control: 9 steps
Power switch: On/O toggle button
Mic and RF mode: Separate mode select buttons
External microphone / Aux in selects automati-
cally when plugged in
Dynamic Range Compressor
Dynamic gain range 0-35 dB
Compression 3:1
Expansion 1:1.5
Attack time 20 (25) ms (≥3 kHz)
Release time 110 (200) ms (>3 kHz)
10 channel dynamic noise reduction
Adaptive phase-invert feedback cancellation
Digital signal processing
22 050 kHz sampling frequency
16 bit resolution in stereo
Digital radio transmission
2.4 GHz ISM band, 3 channels
 Automatic channel allocation
 128 bit encryption
Topology: 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
Transmitter output power: max 25 mW
Acoustic specications
Maximum output saturation
Using BE9122 Headphones
BE2250: 124.3 dB SPL / BE2270: 124.3 dB SPL (@ 2.5 kHz)
Using BE9124 Earphones
BE2250: 132.0 dB SPL / BE2270: 130.5 dB SPL (@ 5 kHz)
Using BE9125 Stetoclips
BE2250: 133.7 dB SPL / BE2270: 133.6 dB SPL (@ 1 kHz)
Gain, full volume (1 kHz, 60 dB SPL input signal)
Using BE9122 Headphones
BE2250: 42.5 dB / BE2270: 44.0 dB
 Using BE9124 Earphones
BE2250: 55.0 dB / BE2270: 57.5 dB
Using BE9125 Stetoclips
BE2250: 58.2 dB / BE2270: 64.2 dB
Gain, full volume (60 dB SPL input signal, HFA)
Using BE9122 Headphones
BE2250: 46.5 dB / BE2270: 49.0 dB
Using BE9124 Earphones
BE2250: 51.5 dB / BE2270: 56.0 dB
Using BE9125 Stetoclips
BE2250: 52.0 dB / BE2270: 59.4 dB
Distortion
Using BE9122 Headphones
0.6 % THD
Using BE9124 Earphones
0.08 % THD
Electrical specications
Output power tele-jack 100 mW at 16 Ω load
Impedance, headphones 8 – 72 Ohm
Distortion 0.05 % THD
Dynamic range 95 dB
Frequency range 40 – 10 000 Hz
Tone control
Break point at 1.6 kHz
Tone, high: [email protected] kHz, -6dB@250Hz
Tone, mid: at
Tone, low: [email protected] kHz
No bass boost
Line in sensitivity
0 dBV (maximum input level)
130
120
110
100
90
100 1000 10 000
Hz
dB re 20,0 µPa
dB SPL
130
120
110
100
90
80
70
100 1000 10 000
Hz
dB re 20,0 µPa
dB SPL
140
130
120
110
100
90
80
100 1000 10 000
Hz
dB re 20,0 µPa
dB SPL
In-depth technical information
Input signal
60 dB SPL 70 dB SPL 90 dB SPL
Output using BE9125 StetoclipsOutput using BE9122 HeadphonesOutput using BE9124 Earphones
Input signal
60 dB SPL 70 dB SPL 90 dB SPL
Input signal
60 dB SPL 70 dB SPL 90 dB SPL