Profile Clarus CL440 - Manual (Page 8)

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Connect the RCA output of the head unit (AM/FM cassette player, CD, or DAT)
to the RCA input terminals of the amplifier.
To make these connections, we recommend high quality RCA cables, which are available at your
local car audio retailer. Run signal wires away from electrical wires to avoid possibility of
induced noise from the car's electrical system (i.e. popping noises or engine noise). Please note
that when making these connections the signal inputs correspond with the speaker outputs.
For example: If you connect the radios front right RCA to "CH 1" .......then speaker output
"CH 1" will operate the front right speaker.
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IGNAL CONNECTIONS