Alpine SPC-100AU Manuel D'installation page 29

Affix the damping material 4 at the inner door as shown.
4
4
4
4
1
Front door without door panel
D
A4
C
D
A5
C
Q5
A
2x
B
4x
C
12x
D
6x
C
C
C
C
C
4
2
Rear side of front door panel
C
A4
C
C
D
D
D
A5
C
D
C
Q5
D
D
4
B
C
B
C
C
C
B B
21