Auto Level Control (Alc) Function [Without Bose]; Auto Level Control (Alc) Operation [Without Bose] - Mazda 2006 MX-5 Service Highlights

AUTO LEVEL CONTROL (ALC) FUNCTION [WITHOUT BOSE]

• Adjusts the audio volume so that the sound is balanced against wind and road noise while driving.
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AUTO LEVEL CONTROL (ALC) OPERATION [WITHOUT BOSE]

• The audio unit changes the volume automatically based on the vehicle speed signal sent from the instrument
cluster.
.
HIGHER VEHICLE SPEED
LOWER VEHICLE SPEED
1 Audio unit (base unit)
2 Vehicle speed signal
3 ALC circuit
4 Power amplifier
• The ALC function is divided into seven modes that can be used effectively to match the driving conditions.
Mode
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09–20–8
ENTERTAINMENT
3 4
3 4
5 Speaker
6 Higher volume
7 Normal volume
ALC function cancelled
Convertible top close
Convertible top open
5
6
5
Condition
Outside road noise low
Outside road noise slightly high
Outside road noise high
Outside road noise low
Outside road noise slightly high
Outside road noise high
E5U092066900N03
E5U092066900N08
E5U920ZS5106