auna C500 Manual De Instrucciones página 29

Note: In this configuration, the volume of the subwoofer is controlled
by the fader of the car radio. The output signal to the subwoofer is a
combination of the REAR L and R inputs or the high-level REAR input.
2-channel connection
For details on the settings of the switches and controls, see "Functions".
Left speaker (min. 4 Ohm)
Right speaker (min. 4 Ohm)
Left speaker (min. 4 Ohm)
Right speaker (min. 4 Ohm)
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