AUTO LEVEL CONTROL (ALC) OPERATION

id092000106800

•  The volume of the audio unit changes based on the vehicle speed signal sent from the instrument cluster.
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•  The ALC function is divided into 7 levels. At the higher level, the volume correction range and correction amount increase. The maximum correction amount is 14dB. If ALC OFF is selected, the ALC function stops.
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Volume correction amount table

Vehicle speed

(km/h {mph})

ALC LEVEL1 (dB)

ALC LEVEL2 (dB)

ALC LEVEL3 (dB)

ALC LEVEL4 (dB)

ALC LEVEL5 (dB)

ALC LEVEL6 (dB)

ALC LEVEL7 (dB)
0—15 {0—9.3}
0
0
0
0
0
0
0
20 {12}
0
0
0
0
0
0
1
25 {16}
0
0
1
1
1
1
1
30 {19}
0
1
1
1
1
1
2
35 {22}
1
1
1
1
2
2
2
40 {25}
1
1
1
2
2
2
3
45 {28}
1
1
2
2
2
3
3
50 {31}
1
1
2
2
3
3
4
55 {34}
1
2
2
3
3
4
4
60 {37}
1
2
2
3
4
4
5
65 {40}
1
2
3
3
4
5
5
70 {43}
1
2
3
4
4
5
6
75 {47}
2
2
3
4
5
6
7
80 {50}
2
3
3
4
5
6
7
85 {53}
2
3
4
5
6
7
8
90 {56}
2
3
4
5
6
7
8
95 {59}
2
3
4
5
7
8
9
100 {62.1}
2
3
5
6
7
8
9
105 {65.2}
2
4
5
6
7
9
10
110 {68.4}
2
4
5
6
8
9
10
115 {71.5}
3
4
5
7
8
10
11
120 {74.6}
3
4
6
7
9
10
11
125 {77.7}
3
4
6
7
9
10
12
130 {80.8}
3
5
6
8
9
11
13
135 {83.9}
3
5
6
8
10
11
13
140 {87}
3
5
7
8
10
12
14
145 {90.1}
3
5
7
9
11
12
14
150 {93.2}
3
5
7
9
11
13
14
155 {96.3}
4
6
7
9
11
13
14
160 {99.4}
4
6
8
10
12
14
14
165 {103}
4
6
8
10
12
14
14
170 {106}
4
6
8
10
13
14
14
175 {109}
4
6
9
11
13
14
14
180 {112}
4
7
9
11
13
14
14
185 {115}
4
7
9
11
14
14
14
190 {118}
4
7
9
12
14
14
14
195 {121}
5
7
10
12
14
14
14
200 {124}
5
7
10
12
14
14
14
205 {127}
5
7
10
13
14
14
14
210 {130}
5
8
10
13
14
14
14
215 {134}
5
8
11
13
14
14
14
220 {137}
5
8
11
14
14
14
14
225 {140}
5
8
11
14
14
14
14
230 {143}
5
8
11
14
14
14
14
235 {146}
6
9
12
14
14
14
14
240 {149}
6
9
12
14
14
14
14
245 {152}
6
9
12
14
14
14
14
250 {155}
6
9
13
14
14
14
14