8
Installation
Retrofit / pre-skimmed solid wall cutaway
(Patch plaster finish)
Finishing
This method positions the speaker to be
patch plastered with a 2mm (
5
/
64
”) skim
across the speaker front and blended
with the existing plaster.
Amina recommend British Gypsum Easi-
fill® which allows a smooth accurate finish
using fine sandpaper or a wet sponge.
Existing plaster
skim
Existing render
Removable
plastic trim
BackboxSW
Shims
Sand down to
create taper
Remove existing
plaster from
render
30 - 50mm
1
3
/
16
” - 2”
Expanding
foam
This is an alternative to feathered skim
installation.
For solid walls /ceilings that have already
been plastered and painted.
Cavity depth
The cutaway drawing on the right shows
the alignment of the BackboxSW in the
cavity.
• Temporarily remove the denim pad.
• Use shims between the back of the
BackboxSW and the inside of the cavity
to align the front edge of the plastic
trim with the front face of the render.
• Use expanding foam to fill any
cavities behind and to the sides of the
BackboxSW.
• Replace the denim pad.
• When the BackboxSW is fixed
securely into the cavity, remove the
plastic trim ready for installation of
the loudspeaker and then application
of the final skim coat.
