Clarity A Division of Plantronics Inc. C120A User Manual
8
9
C120 INSTALLATION
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.
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.
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.
CD Player
FIG. 8
MP3
Player
Player
FIG. 9
FIG. 6
STEREO
MONO
3.5mm jack
TV
FIG. 7
Computer
FIG. 5
TV
R
W
C120 INSTALLATION
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.
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.
2. Select the Appropriate Audio Cord
A. RCA Cord: has red and white connectors
on both ends. Used to connect stereo TV’s,
VCR’s, or audio equipment to the C120 base
unit. See Figures 3 and 4.
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.
A. RCA Cord: has red and white connectors
on both ends. Used to connect stereo TV’s,
VCR’s, or audio equipment to the C120 base
unit. See Figures 3 and 4.
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 out-
going 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.
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 out-
going 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. 4
VCR
TV
R
W
STEREO
MONO
FIG. 3
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.
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.
DC12V
FIG. 2