Alpine iLX-F259 Owner's Manual page 23

Example 2. Listening Position: All Seats
Adjust the time correction level of each speaker to almost the same level.
1
Sit in the listening position (driver's seat, etc.) and
measure the distance (in meters) between your head and
the various speakers.
2
Calculate the difference between the distance correction
value to the farthest speaker and the other speakers.
L = (distance to farthest speaker) – (distance to other speakers)
These values are the time correction values for the different speakers.
Setting these values to make each sound reach the listening position
at the same time as the sound of other speakers.
Time Correction Value List
Time
Distance Distance
Difference
(cm) (inch)
(msec)
0.0 0.0 0.0
0.1 3.4 1.3
0.2 6.8 2.7
0.3 10.2 4.0
0.4 13.6 5.4
0.5 17.0 6.7
0.6 20.4 8.0
0.7 23.8 9.4
0.8 27.2 10.7
0.9 30.6 12.1
1.0 34.0 13.4
1.1 37.4 14.7
1.2 40.8 16.1
1.3 44.2 17.4
1.4 47.6 18.8
1.5 51.0 20.1
1.6 54.4 21.4
1.7 57.8 22.8
1.8 61.2 24.1
1.9 64.6 25.5
2.0 68.0 26.8
2.1 71.4 28.1
2.2 74.8 29.5
2.3 78.2 30.8
2.4 81.6 32.2
2.5 85.0 33.5
2.6 88.4 34.8
2.7 91.8 36.2
2.8 95.2 37.5
2.9 98.6 38.9
3.0 102.0 40.2
3.1 105.4 41.5
3.2 108.8 42.9
3.3 112.2 44.2
3.4 115.6 45.6
3.5 119.0 46.9
3.6 122.4 48.2
3.7 125.8 49.6
3.8 129.2 50.9
3.9 132.6 52.3
4.0 136.0 53.6
4.1 139.4 54.9
4.2 142.8 56.3
4.3 146.2 57.6
4.4 149.6 59.0
4.5 153.0 60.3
4.6 156.4 61.6
4.7 159.8 63.0
4.8 163.2 64.3
4.9 166.6 65.7
5.0 170.0 67.0
Time
Distance Distance
Difference
(cm) (inch)
(msec)
5.1 173.4 68.3
5.2 176.8 69.7
5.3 180.2 71.0
5.4 183.6 72.4
5.5 187.0 73.7
5.6 190.4 75.0
5.7 193.8 76.4
5.8 197.2 77.7
5.9 200.6 79.1
6.0 204.0 80.4
6.1 207.4 81.7
6.2 210.8 83.1
6.3 214.2 84.4
6.4 217.6 85.8
6.5 221.0 87.1
6.6 224.4 88.4
6.7 227.8 89.8
6.8 231.2 91.1
6.9 234.6 92.5
7.0 238.0 93.8
7.1 241.4 95.1
7.2 244.8 96.5
7.3 248.2 97.8
7.4 251.6 99.2
7.5 255.0 100.5
7.6 258.4 101.8
7.7 261.8 103.2
7.8 265.2 104.5
7.9 268.6 105.9
8.0 272.0 107.2
8.1 275.4 108.5
8.2 278.8 109.9
8.3 282.2 111.2
8.4 285.6 112.6
8.5 289.0 113.9
8.6 292.4 115.2
8.7 295.8 116.6
8.8 299.2 117.9
8.9 302.6 119.3
9.0 306.0 120.6
9.1 309.4 121.9
9.2 312.8 123.3
9.3 316.2 124.6
9.4 319.6 126.0
9.5 323.0 127.3
9.6 326.4 128.6
9.7 329.8 130.0
9.8 333.2 131.3
9.9 336.6 132.7
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