6
In-wall installation
Non-directional sound
The low frequency bass sound from the
ALF120 is not directional. This helps when
choosing a location as the ALF120(s)
can be located away from the in-wall
speakers if necessary.
In-wall locations
The ALF120 can be mounted in-
wall, providing that the stud wall is
constructed from 5” timber which gives
an internal depth for installation of the
ALF120 of 121mm.
The drawing below shows the critical
dimensions when installing the ALF120
in-wall.
When installing the ALF120 where
there is an existing 4” stud wall, the
recommended option is to dismantle the
wall and re-construct it with 5” timber to
create the correct depth for the ALF120.
Where it is not possible to re-construct
the complete wall, sections may be built
out with 5” stud to accommodate the
ALF120(s).
The instructions and illustrations that
follow give general advice and guidance
for installation in a 5” stud wall. Each
building and location may require a
slightly different approach to preparing
the cavity and making good the wall
afterwards.
Vibration
During installation, remember that the
ALF120 produces deep bass sound that
can excite vibration in pipes and wires
within the wall and also in wall fitted
items such as lights.
It is good practice to securely fix wiring
and pipes that run in cavities close to an
ALF120 or to wrap them in adhesive foam
to reduce the possibility of vibration.
Preparing the wall cavity
When preparing a wall cavity for the
ALF120, consider the following points -
•
Is the cavity the correct size?
It is important to keep to the
recommended dimensions to avoid
fit
problems. If the cavity is too small
there may be difficulties making the
ALF120 fit or making good the wall. If
the cavity is too large and the ALF120
is a loose fit in the wall, you may
encounter vibration problems.
•
Have you routed the wiring to the
cavity?
The wiring should enter the cavity
above the terminal panel positioned
on top of the ALF120. 2.5mm
2
(14AWG)
stranded cable is recommended.
350mm
121mm
