Palmer CAB 212 G12A OB Manuel D'utilisation page 18

Place the speaker into the cutout and position the speaker so it
5
matches the holes in the baffle.
NOTE
Some speakers ship with padding on both sides of the basket, others only
have padding on one side. As the speakers on the Palmer cabinets are
front loaded, make sure they are padded on the back. If they are not
padded you can resort heat insulation tape as it is used for windows and
doors or similar.
18
THIS PART
MUST BE
PADDED