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4.h Music/line input
The system has a line input for connection to an audio source for background music diffusion.
You can connect both sources with balanced output and sources with unbalanced output. The following figures describe the connections.
For the connection of audio sources with unbalanced output, connect the positive to terminal 1, the source ground to terminal three and leave
the central terminal free.
J4 – Line input for audio
sources
1 – Audio P
2 – Common/Ground
3 – Audio N
Balanced line input, transformer insulated. Used for background music diffusion.
Power levels: 0.8Vrms @ 0dB, Ri=100Kohm
Use shielded cable for audio signal with min section 0.5mm
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