Clarity C120 User Guide

User Guide

™

C120

Wireless TV Amplifier

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IMPORTANT SAFETY AND

OPERATIONAL INFORMATION

IMPORTANT SAFETY AND

OPERATIONAL INFORMATION

Please read the following safety and operational instructions before using the
C120 Wireless TV Amplifier. Keep these instructions for your reference.

When using your C120, these basic safety precautions and warnings should be
followed to reduce the risk of fire, electric shock, injury to persons and
damage to property.

WARNINGS

• If you or a member of your household has a pacemaker or other medical
device, consult your physician or the manufacturer of the pacemaker or medi
cal device before using this product. The product should be used in accor­dance with the guidelines provided by your physician or the manufacturer of
the pacemaker or medical device.

• Exposure to high volume sound levels may damage your hearing. Although
there is no single volume setting that is appropriate for everyone, you should
always use the headset with the volume set at moderate levels and avoid
prolonged exposure to high volume sound levels. The louder the volume, the
less time is required before your hearing could be affected. If you experience
hearing discomfort, you should stop using the headset. To protect your hear
ing, some hearing experts suggest that you:

1. Set the volume control in a low position before putting the headset on your
ears and then adjust the volume to a comfortable level.

2. Limit the amount of time you use the headset at high volume.

3. Avoid turning up the volume to block out noisy surroundings.

4. Turn the volume down if the sound from the headset prevents you from
hearing people speaking near you.

See www.plantronics.com/healthandsafety for more information on
headsets and hearing.

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• CHILDREN. Never allow children to play with the product– small parts may
be a choking hazard and the amplified volume may cause hearing damage.

• To reduce the risk of electric shock, explosion or fire, only use the supplied
AC adapter. Do not disassemble the AC adapter as this may expose you to
dangerous voltages or other risks. Incorrect reassembly can cause electric
shock or fire when the product is subsequently used.

• Keep all products, cords, and cables away from operating machinery.

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• Do not insert anything into the product because this may cause damage to
the internal components or cause injury to you.

• Avoid contact with liquids. Do not locate this product near water, for ex
ample, near a bathtub, or sink, in a wet basement, or near a swimming pool.

• Discontinue use of product and contact Clarity if the product overheats, has
a damaged cord or plug, if the product has been dropped or damaged, or if the
product has come into contact with liquids.

BATTERY WARNINGS

To reduce the risk of fire or injury to persons, read and follow
these instructions.

• Do not dispose of the product or battery in a fire. The battery cells may
explode. Check local laws for disposal instructions.

• Do not open or mutilate the battery. There may be corrosive materials
which can cause damage to eyes or skin and may be toxic if swallowed.

RECYCLING: The battery used in your headset must be recycled or disposed
of properly. Contact your local recycling center for proper disposal of
your headset.

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2 3

CONTENTS

Parts Checklist .................................................................................. 5

Quick Reference Guide .................................................................. 6

Features ................................................................................................ 7

Clarity Power Control ................................................................. 7

Telephone Ring Notification ........................................................... 7

Public IR Address Usage ............................................................... 8

Setup Guidelines

C120 Transmitter .......................................................................... 8

C120 Headset .............................................................................. 12

Troubleshooting .............................................................................. 15

Technical Specifications ..............................................................16

Regulatory Compliance ............................................................... 17

1. Headset

PARTS CHECKLIST

1. Headset

2. Transmitter

3. Headset Pouch

4. Microphone

5. AC Adapter

6. Rechargeable Batteries (2)

7. User Guide

8. Flathead Screwdriver

9. RCA Cable
(dual red and white plugs)

10. RCA – 3.5mm Cable

11. Phone Line Cord

2. Transmitter

IMPORTANT SAFETY INFORMATION

Hearing Safety

The C120 is intended to reproduce sounds at a high volume. Damage to
your hearing is a possibility if used improperly. To prevent any possible
damage to your hearing, please observe the following guidelines:

1. Turn the volume all the way down on the headset before putting it on.

2. When adjusting the volume to a comfortable level, start at the
minimum volume and slowly turn the volume up. This will ensure
the volume is set at the minimum level needed to hear clearly.

3. Headset Pouch

6. Rechargeable
Batteries (2)

9. RCA Stereo Cable

5

4. Microphone

7. User Guide

10. RCA 3.5 mm
Stereo Cable

5. AC Adapter

8. Flathead Screwdriver

11. Phone Line Cord

C120

OFF

OFF

ON

LR

L (WHITE)

R (RED)

STEREO RCA JACKS

TV BACK VIEW

RCA 3.5mm cable (provided)

(if TV only has a 3.5mm audio port)

STEREO / MONO

STEREO / MONO

L/MONO

TV C120

L

R

DC12V LINE PHONE

STEREO MONO

MIC

Quick Reference Guide

3a

1

4

4

3

3

QUICK START GUIDELINES

1. Plug in AC adapter.

2. Place battery in headset and place headset in
C120 base to charge battery overnight.

3. Connect RCA (red and white) cables.
a. IF the television has two RCA (red and

white) ports labeled “OUT,” or a 3.5mm
audio jack, set the “STEREO/MONO”
switch to “STEREO.”

b. IF the television has only one RCA (white)
port, set “STEREO/MONO” switch
to “MONO.”

4. For telephone ring notification, connect the
phone cord from the wall to “LINE” and
connect cord from “PHONE” to telephone.

5. To POWER-ON headset, place on head.
As the arms are spread apart, the unit
powers on.

3b

The C120 must

be fully charged

STOP

for 8 hours before

2

5

first use.

C120 INTRODUCTION

Thank you for purchasing the new and exciting C120 from Clarity. The
C120 provides an enjoyable television viewing experience for people who
have a hard time hearing the television.

The C120 uses infrared technology to wirelessly send signals from a sound
source to the headset receiver. This means that this product does not
require cords to connect to the headset and the user can be free to move
around without the worry of tangling cords.

The C120 can be used with HDTV, Satellite, Digital, LCD and standard
televisions. It can also be used to listen to other audio equipment, such as
a stereo. The use of the product allows a user to listen to music or TV at
a comfortable level without disturbing other viewers or others in the area.
Multiple headsets may be used with a single base to accommodate more
than one user.

Note: Additional headsets and batteries are available for purchase. For
more information, please contact Clarity Customer Service at 1-800­426-3738. Also view products online at www.clarityproducts.com.

The C120 can not only be used at home, but also outside the home in
places like the movies, conventions, museum tours, and sporting events
(where a public infrared system is offered). Check with the site admini­stration to see if infrared service is available.

2

FEATURES

®

Clarity

The Clarity Power Control improves the sound quality of an incoming audio
signal for a better listening and viewing experience. The amplification of the

Power Control

TM

audio will be increased and the frequency band from 2000 to 3000Hz will
be specially enhanced to improve the speech discrimination clarity of audio.

Telephone Ring Notification

This feature will notify the user of an incoming telephone call through
the C120 headset. An audible notification will be heard to notify the user
that the phone is ringing.

6 7

C120 INTRODUCTION

VCR

TV

R

W

STEREO MONO

DC12V

C120 INSTALLATION

Public IR Address Usage

This feature allows the headset to be worn at
public events where a infrared system is offered
for those with a hearing impairment. Examples of
such an area could be a movie theater, churches,
or public areas. Check with site administration to

CONNECTING THE C120 TRANSMITTER

1. Connect the Power

Connect the AC Adapter into the DC12V port
located on the back of the base (Fig. 2). Plug the
AC Adapter into a wall outlet.

see if infrared service is available.

C120 INSTALLATION

2. Select the Appropriate Audio Cord
A. RCA Cord: has red and white connectors

FIG. 2

on both ends. Used to connect stereo TV’s,

SETTING UP THE C120 TRANSMITTER

VCR’s, or audio equipment to the C120 base
unit. See Figures 3 and 4.

38 feet

FIG. 1

Note: The C120 is not

compatible with Plasma
televisions.

Important Setup Guidelines

The C120 TV Amplifier transmitter may be
placed on top of a television or shelf. Do not
place objects in between the transmitter base
and the headset receiver, as it will block the
signal to the headset.

It is important to read the following
guidelines to ensure the proper function
of your headset.

1. For the clearest signal, place the base at
eye level or above. As illustrated in Fig. 1, the
clearest signal emitted from the base is in a
straight line, directly in front of the base. The
base must be clearly visible from where you
will be using the headset.

2. Sunlight can cause interference with the
product and cause problems such as buzz,
static, or hiss. As a result, this product cannot
be placed in direct sunlight or be used outdoors.

3. The headset must be located in the same
room as the base and no more than 38 feet
from the base.

Multiple headsets may be used with a single base
if they are set to the same frequency. However,

B. RCA to 3.5mm Cord: has red and white
connectors on one end and a 3.5mm headset
plug on the other. Use this cord to connect
to audio devices that only have a headset jack.
See Figures 6 to 9 on page 9.

3. Configuring the Audio
A. RCA to RCA Mode

This is suggested for highest sound quality. This
mode should be used if the television (or other
audio equipment) has two RCA audio ports
(red and white). See Figures 3 and 4.

There are two types of ports on the back of a
television or other audio device, ones that receive
incoming sound, and others that transmit out­going sound. The C120 needs to be plugged into
the ports that transmit the outgoing sound.

To find the correct ports on the back of the
television or other device, look on the back of
the device for the red and white ports that are
labeled “Audio Out.” Most of the red and white
ports on the television are labeled “IN” for input,
and the C120 needs to be connected to a port
labeled “OUT” to receive the outgoing sound.

FIG. 3

FIG. 4

Note: The television is the

best solution because it is
a source for all the audio
from the DVD player, VCR,
cable, and other devices. For
example, if you plug into DVD
player, only audio from DVD’s
will be heard.

if more than one base is being used at the same

8 9

time, interference will occur.

C120 INSTALLATION

CD Player

MP3
Player

STEREO MONO

3.5mm jack

TV

Computer

TV

R

W

MIC

C120 INSTALLATION

FIG. 5

FIG. 6

FIG. 7

FIG. 8

FIG. 9

If you have digital cable or satellite, plug the
C120 into the digital cable or satellite box
if possible.

Connect the RCA jacks to the output of the
TV or VCR. Connect the other end of the
cord to both the left and right RCA ports
on the C120 base. Next, select “STEREO” on
the “MONO/STEREO” switch on the base.

If the television (or other audio equipment)
has only one RCA port, connect the left (white)
RCA jack from the output into the left (white)
RCA port of the base. The right (red) jack
should remain unplugged on both ends. Next,
select “MONO” on the “MONO/STEREO”
switch on the base. See Figure 5.

B. RCA – 3.5mm Mode

This should be used if the television (or other
audio equipment) has only a 3.5mm jack.

This enables the C120 to be used with
computers, CD players, stereos, MP3 players,
and other related products.

Use the cord with the RCA jacks on one end
and the 3.5mm jack on the other. Plug the

3.5mm jack into the device and connect the
RCA jacks in the C120 base. See Figures 6
to 9. Next, select “STEREO” on the “MONO/
STEREO” switch located on the C120 base.

C. Microphone Mode

Use this mode only if an RCA or headset port
connection is not available; for example, older
televisions that may not have audio outputs.
Connect the supplied microphone into the
“Mic” port on the back of the C120 base.
See Figure 10. Place the microphone near
the speaker of the television or stereo. See
Figure 11.

Note: The microphone will pick up any sound
in the room, such as speech, the doorbell, or
the telephone.

Telephone

The C120 has the ability to produce an audible
tone heard through the headset when the
telephone rings. The following step is neces­sary if telephone ring notification is desired.

First, plug the telephone cord coming from
the wall into the “LINE” port at the rear of
the C120 base. A phone may be connected
to the C120 base by connecting a phone cord
from the C120 port labeled “PHONE” to your
telephone. See Figure 12.

The C120 allows you to use the same phone
wall outlet for both your phone and C120
TV Amplifier.

FIG. 10

FIG. 11

FIG. 12

10 11

C120 OPERATION

HEADSET CHARGER

BACKUP BATTERY CHARGERS

OFF

ON

Headset front

Base

2.3 MHz 95 kHz

AWAYHOME

C120 OPERATION

FIG. 13

FIG. 14

Note: The battery is not

charged when it comes out of
the box. It must be charged
overnight before usage.

SETTING UP THE C120 HEADSET

Installing the Batteries

Install the supplied rechargeable battery in
the bottom of the headset. Once you place the
headset into the base (Figure 13) it begins
to charge the battery. An LED light will illumi­nate on the front of the C120 base to confirm
the charging has begun. The light will stay on to
notify that the battery is making contact with
the charger. The battery is not charged when it
comes out of the box. It must be charged over­night before usage.

Backup batteries may be bought and placed
in the additional charging docks located on
the base. The charging docks are labeled
in Figure 14.

Having extra batteries on hand will enable
you to easily swap batteries, without having to
wait for your current battery to recharge. When
the product is not in use, return the headset to
the base to recharge the battery.

At full volume, the battery will last approximate
ly four (4) hours. Using lower volumes
will increase the length of the charge. An
indication that the battery should be recharged
might be the sound getting weak or noisy. The
battery takes four (4) hours to fully charge and
and can be fully charged and depleted approxi­mately five hundred (500) times before
it should be replaced.

ADJUSTING THE HEADSET

Public IR Usage

On the top of the headset (receiver) there
is a switch labeled “HOME/AWAY.” When
using the headset to listen to the television with
the included base, set switch to “HOME.” For
use with public infrared systems, set the switch

FIG. 15

to “AWAY.”

Volume Control

There is a volume control wheel on the top of
the headset where the volume may be controlled
easily. Turn the wheel in the direction of the
“+” to increase volume and toward the “-” to
decrease the volume. See Figure 19 on page 13.

FIG. 16

Note: The volume may or may not be affected

by the television volume controls. Please refer
to the television manual or manufacturer for
more information.

Powering On

-

When the headset arms are extended, the unit

FIG. 17

automatically powers on. See Figure 16. When
the headset is removed from the head, the arms
will return to the “off” position. If there is no
audio signal being detected by the C120 for
ninety (90) seconds, it will power down.

Note: The infrared sensor that communicates
with the transmitter base is on the front of the
headset and should remain within sight of the

FIG. 18

C120 base. See Figure 17.

12 13