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Univox® CLS-1
Compact and powerful induction loop amplifier
for TV/music/microphone
User Guide
Art.nr. 202052
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Content
Introduction ..................................................................................................................... 3
Installation ....................................................................................................................... 4
Place the amplifier and connect the chosen loop solution ............................ 4
Connect Univox® CLS-1 to your TV and/or other sound source .................... 5
Adjusting sound level, tone and microphone sensitivity ................................ 6
Listen to music with headphones .............................................................................. 7
Indication lights and controls ...................................................................................... 8
Security/warranty ........................................................................................................... 9
Maintenance .................................................................................................................... 9
Trouble shooting............................................................................................................. 9
Service .....................................................................................................................10
Technical data ............................................................................................................... 10
Environment .................................................................................................................. 10
Accessories .................................................................................................................... 11
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Introduction
Thank you for chosing a Univox® product. We hope you will be satisfied!
Univox® CLS-1 is a compact yet powerful loop amplifier for wireless listening through your
hearing aid.
Connect your TV, stereo, MP3, microphone or any other sound source that you want to
hear clearly to onte of the three inputs. Then complete the installation by connecting your
choice of loop pad, sofa loop cable, room loop cable and/or headphones.
The Univox® CLS-1 box contains a hearing loop driver and switched power supply as well as
the chosen loop solution.
You can buy accessories making it possible to use your Univox® CLS-1 in more ways. For
example you can connect Univox® CLS-1 to the 12V/cigarette lighter output in your car
and with an extra loop pad and a ramification cable it’s possible for two persons to share
one amplifier. Accessories that are available for this product are listed in the section
Accessories.
Please read this user guide carefully before installation and use of this product. All
Univox® hearing loop drivers have a very high output current capability resulting in powerful
and secure products fulfilling existing standards, IEC 60118-4, when correctly installed.
Sofa loop cable
Loop pad
Room loop cable with
50 clips
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Installation
Place the hearing loop driver and connect the chosen
loop solution
Place the loop driver in a suitable place near the TV/stereo. If needed, use the velcro pads
included to fasten the loop driver to the side or back of the TV. The loop driver has very
efficient cooling and can therefore get warm in use, as the metal case leads off the heat
from the electronics. For this reason, keep the loop driver away from sensitive materials.
Loop pad
Put the loop pad under/on the cushion on the sofa/chair where you want to sit when
watching TV. Connect it to the DIN output on the rear panel.
Sofa loop
Attach the sofa loop underneath the sofa (be careful if you use a stapler) or put the loop
on the floor around the sofa, for example underneath the carpet under the sofa. Connect it
to the DIN output on the rear panel.
Room loop
The loop cable can for example be attached with the clips included on the floor trim
along the walls of the room. It can also be placed under the carpet or in the ceiling. The
Switched
power
supply
TV/Stereo
Room loop
TV/
Stereo/
Microphone
Microphone
sensitivity
Headphones
Loop pad/
sofa loop
Microphone
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loop should not be positioned at mid height as this will influence the performance of the
system. Connect the wire ends to the loop terminal on the rear panel. See the outputs on
the rear panel on the previous page.
Connect Univox® CLS-1 to your TV and/or other
sound source
Univox® CLS-1 has two inputs (3.5mm) that can be used to connect your TV, stereo or
other sound source and a special microphone input (3.5mm), which makes it possible to
pick up the sound from the speaker of the TV. The microphone input level can be adjusted
for this input.
See the inputs on the rear panel on the previous picture.
Start by checking your TV’s audio outputs and the outputs of the other input sources that
you want to connect. Consult the manual for each source for information on audio outputs
(RCA, Scart etc.)
Obtain the necessary cable/s for you Univox® CLS-1, if you have not already done so. You'll
find a list of cables and other related parts in section Accessories.
Connect your TV and/or other sound sources to the Univox® CLS-1 with the appropriate
cable according to the following guidelines:
TV/other sound sources
Connect TV, stereo etc. to the line input (Line). If you want to connect both TV and for
example a stereo, use the line input (Line) for one of the sound sources and the combined
mic/line input (Mic/Line) for the other sound source.
If you want to connect the audio output of your TV (RCA) to the driver, use an audio cable
with double RCA connectors at one end and a 3.5mm/
1
/8 inch connector at the other end
(Audio cable, see section Accessories). To connect your stereo to the Univox® CLS-1 you
need the same cable.
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Microphone
If a microphone will be used, for example to make it possible for someone else to talk to
you while using the loop, it should be connected to the special microphone input (Mic). The
microphone shall be an electret type microphone (13T, see section Accessories).
It’s also possible to pick up TV or stereo sound by attaching a special microphone on the
speaker grid (13A, see section Accessories). This microphone is normally connected to
the combined mic/line input (Mic/Line) but can also be connected to the special mic input
(Mic) if you want to adjust the input level. Take off the paper cover of the loose round
velcro pad and attach it to the speaker grid of the TV. Then use the attached velcro pad on
the microphone to attach it onto the speaker. The microphone will then automatically be
directed inwards and pick up the sound from the speaker. If you want to pick up the sound
of a surround system with the 13A microphone, attach it to the centre speaker.
Switched power supply
Connect the switched power supply to the output for mains power on the rear panel (12V
AC/DC). Finally connect the power supply to a power outlet.
Adjusting sound level, tone and microphone sensitivity
When all connections are done the indicator for mains power to the right on the front panel
should light steadily. The system is now active and ready to use. It’s now time to make your
personal adjustments of loop current (volume), bass, treble and microphone sensitivity
to receive the best possible sound intelligibility. Start by putting your hearing aid/s in T
position.
Sound level
The sound level of the loop is adjusted with the volume control (thumb wheel) on the front
panel. The level can be adjusted up or down according to the conditions on site and to your
specific hearing deficit. Adjust the thumb wheel until you receive a comfortable level. It can
be recommended to make a note of the ideal level for future reference.
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Bass and treble:
You can adjust bass and treble if needed by using the two controls on the front panel.
Adjust the controls until desired sound balance is achieved.
Microphone sensitivity
If a microphone is connected to the loop driver the input level of the microphone might
need adjustment. This is done with the control located at the special microphone input
(Mic) on the rear panel. Proceed as follows: Turn on your TV at desired volume or speak into
the microphone. Adjust the control until the indicator to the le on the front panel lights up
in program peeks or when somebody speaks into the microphone. Now the correct level is
set.
Attention!
If no microphone is connected to the mic input the sensitivity control should be turned to
minimum (counter clockwise) to avoid poor sound intelligibility.
Listen to music with headphones
Univox® CLS-1 with its built-in automatic gain control (AGC) is developed for superior
speech intelligibility when used as a loop driver. However, while listening to music with
your hearing aid/s in T position, the sound might be unsatisfactory. This happens because
most hearing aids limit certain frequencies, for example bass tones, which might result in a
flat sound without nuances.
You can receive a richer more nuanced sound if you take off your hearing aid/s and instead
listen to the music with headphones connected to the headphones output on the rear
panel. The quality enhancement resulting from listening with headphones depends on the
type of hearing impairment you have and the type of headphones you use.
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Mains power
The mains power indicator is placed on the right side on the front panel. If this LED is lit the
driver is correctly connected to the mains outlet and the driver is ready for use.
Correct microphone level
To the le the LED for indication of the microphone sensitivity of the mic input is located. If
the mic sensitivity control is correctly set, this LED shall light up at program peaks.
Loop current
At the centre of the front panel the LED for loop current is located. This LED is blinking
according to the program material and indicates that the loop is not broken. Please note
that this LED only indicates that there is current floating in the loop, not that the level is
sufficient.
The volume thumb wheel and the bass and treble controls are also located on the front
panel.
Indication
mains
power
Indication
microphone
sensitivity
Indication
loop current
Volume
control
Bass
control
Treble
control
Indication lights and controls
There are three blue LED’s on the front panel to indicate that all functions of the hearing
loop driver work in a proper way.
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Safety and warranty
The equipment should be installed by a competent audio visual technician observing 'good
electrical and audio practice' at all times and following all the instructions contained within
this document.
Only use the power adapter supplied with the unit. If the power adapter or cable is
damaged, replace with a genuine Univox part.
Power adapter must be connected to a mains outlet close to the amplifier and easily
accessible.
The installer is responsible for installing the product in a way that may not cause risk
of fire. Do not cover the power adapter or loop driver. Only operate the unit in a well
ventilated, dry environment.
Do not remove any covers as there is a risk of electric shock. Please observe
that the product warranty doesn't include faults caused by tampering with the
product, carelessness, incorrect connection/mounting or maintenance.
Maintenance
Under normal circumstances the product does not need any special maintenance.
Should the unit become dirty, wipe it with a clean damp cloth. Do not use solvent or strong
detergents.
Trouble shooting
If the loop driver does not perform satisfactory, check the following:
Is the mains power indicator lit? If not, check that the power supply is correctly connected
to the power outlet and to the driver.
Is the loop current indicator lit? This indicates that the system works. If not, check that the
loop pad, sofa or room loop is not broken and or incorrectly connected. Check also all other
connections.
Attention! If headphones are connected the loop current indicator is disabled.
The loop current indicator is lit but there is no sound in the hearing aid: check that the
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M-T-O switch of the hearing aid is in T or MT mode. Also check the status of your hearing
aid batteries.
Bad sound quality? Adjust the loop current, bass and treble controls. Bass and treble
adjustment should normally not be needed.
Service
Should the system not work aer having made the product test as described above, please
contact the local distributor of the product for further instructions. If the product is sent to
Bo Edin AB, please enclose a filled Service Form, www.Univox.eu, Support.
Environment
Please follow existing disposal regulations in your country. If you respect these instructions
you ensure human health and environmental protection.
Technical data
Correctly installed Univox® CLS-1 fulfils the demands of the international standard IEC
60118-4:2006.
For additional information, please refer to product data sheet/brochure and CE certificate
which can be downloaded from www.Univox.eu. If other technical documents are required
they can be ordered from support@edin.se.
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Accessories
Part No Description
900734 Switched power supply, 230/15V 18VA (EU)
900738 Switched power supply, 230/15V 18VA (UK)
900740 Switched power supply, 120/15V 18VA (US)
900744 Switched power supply, 230/15V 18VA (AUS)
283002 Loop pad, 400x400x5mm, 2 pin DIN, grey, cable=10m
283210 Extension cable for loop pad, 2 pin DIN, black, cable=10m
283220 Sofa loop cable incl. ext. lead, 2 turns, cable connector, 2 pin DIN, black, cable=8+10m
283240 Room loop cable roll, 0,75mm
2
, incl cable clips, light grey, cable=30m
289002 Adaptor cable for car cigarette lighter for Univox CLS-1
281015 Audio cable, 3.5mm male to two RCA male, cable=1.5m
281041 HDA-2M D/A Converter incl. optical cable
282007 Ramification cable, 2 pin DIN male to two 2 pin DIN female, cable=0.2m
242401 13A, Electret mic, velcro adhesive, 3.5mm male, cable=3m
241501 13T, Electret microphone, condenser capsule, boundary
289015 Holder for wall mounting, black aluminium
Univox CLS-1 Kits
Choice of Loop pad Sofa loop Room loop
EU power supply 202052P 202052S 202052R
UK power supply 202054P 202054S 202054R
US power supply 202056P 202056S 202056R
AUS power supply 202058P 202058S 202058R
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cls-1-du-gb-150522 Copyright © Bo Edin AB
Distributor
Univox by edin, the world’s leading expert and producer of high quality hearing loop
systems, created the very first true loop amplifier 1969. Ever since our mission is to serve
the hearing community with the highest degree of service and performance with strong
focus on Research and Development for new technical solutions.
Hearing excellence since 1965
Bo Edin AB, Stockby Hantverksby 3, SE-181 75 Lidingö, Sweden www.univox.eu
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