Clarity A Division of Plantronics Inc. C120 ユーザーズマニュアル

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First, connect the Power Supply into the DC12V 
jack located on the back of the base. The DC12V 
port is illustrated in Fig. 2. Then plug the Power 
Supply into a wall outlet.

Next, using one of the Audio Cable supplied, 
connect the base unit directly to the TV, VCR, 
or other equipment output jacks. See different 
connection options listed below.

Included in the package, there are two cords to 
use for the incoming audio. One will have two 
RCA jacks (red and white) on both ends. (Fig. 
3) This can be used to connect with devices with 
both Right and Left channel RCA jacks (TV’s, 
VCR’s, etc). The other is a cord with two RCA 
jacks (red and white) on one end and on the 
other is a 3.5mm jack. (Fig. 4) A 3.5mm jack is 
the size found on a pair of headphones. This can 
be used to connect the C120™ to devices with 
3.5mm ports, such as CD players, radios and 
other small electronics. See Figures 6-9.

(For Highest Sound Quality) This mode should 
be used if the television (or other audio equip-
ment) has two RCA audio jacks (red and white). 
See Figures 3 and 4.

Connect the RCA plugs from the speaker 
output of the TV or VCR into both the left 
and right RCA jacks on the base. 

Next, select “Stereo” on the 
Mono/Stereo switch.