Pioneer GM-D8601 Owner's Manual page 11

Installation
3 Install the amplifier with the use of
supplied tapping screws (4 mm × 18 mm).
3
4
1 Tapping-screws (4 mm × 18 mm)
2 Drill a 2.5 mm diameter hole
3 Floor mat or chassis
4 Hole-to-hole distance: 257 mm (GM-D8601)
/ 307 mm (GM-D9601)
5 Hole-to-hole distance: 181 mm (GM-D8601)
/ 181 mm (GM-D9601)
1
2
5
Section
04
11
En