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AUTO LEVEL CONTROL (ALC) OPERATION

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• The audio unit changes the volume automatically based on the vehicle speed signal sent from the instrument cluster.

1 | Higher vehicle speed
2 | Lower vehicle speed
3 | Audio unit (base unit)
4 | Vehicle speed signal
5 | ALC circuit
6 | Power amplifier
7 | Speaker
8 | Higher volume
9 | Normal volume

• The ALC function is divided into four modes, and can be used effectively to match the driving conditions.

Mode | Condition
--- | ---
| ALC function cancel
| Outside road noise low
| Outside road noise rather high
| Outside road noise high