auna FS23 Manual page 13

EN
Connection equipment
Jacks and plugs of the connecting cord are colour-codes as follows:
Red jacks and plugs: For the right channel of audio signals.
White jacks and plugs: For the left channel of audio signals.
Note: Insert the plugs fully into the jacket. Loose connections may produce
a humming sound or other noise interference.
Important:
Connect the speakers an all other external equipment and finally connect
the AC power cord.
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