Niles CM8SW Installation & Operation Manual page 13

switch, removing the cover plate
and switch or receptacle, and
shining a penlight into the wall. If
you have access to an attic or
basement space you can quickly
see which part of the wall space
is free of obstructions (See
Figure 12).
When you don't have access
above or below the wall, try to
estimate the existing wire and
pipe locations from the positions
of electrical outlets and plumbed
fixtures on both sides of the wall.
Take a look at the outside of your
house too, sometimes conduit,
vents or drain pipe will be visible
giving useful information.
Choose the route with the fewest
potential obstacles.
Ii your house is built on a slab or
you are wiring between two finished
Sometimes, an under-the-carpet run is pos-
floors, look for baseboards which could
sible (there are special flat speaker wires
be removed and replaced with the wire
made for under-the-rug wire runs). As a last
behind them. Doorjambs can be removed
resort, heating and air conditioning vents
and often have enough space for speaker
can be used as wire raceways for plenum
wire all the way around the door (See
rated wire (check your local building codes,
Figure 13). some municipalities require conduit).